By doing what they always do, twist it into something it doesn't actually say.
Another good one is that a normal Jehovah's witness believer who is not one of the 144.000 is considered to be part of the great crowd. In their doctrine a member of the great crowd will never enter into heaven as only the 144.000 go to heaven yet in their own corrupt Jehovah's Witnesses bible the great crowd appear in heaven.
Revelation 19:1 nwt corrupted version
After this I heard what seemed to be a loud voice of a GREAT CROWD IN HEAVEN . They said: “Praise Jah! The salvation and the glory and the power belong to our God,
Hi Billy, concerning the 144,000 They are only male, Jewish Virgins.
I get the males only from not being defiled by women.
Note: The great crowd appears to be in heaven too because of the angels around the throne. As you point out from Rev 19 the great crowd is in heaven.
Revelation 14 King James Version (KJV)
14 And I looked, and, lo, a Lamb stood on the mount Sion, and with him an hundred forty and four thousand, having his Father's name written in their foreheads.
2 And I heard a voice from heaven, as the voice of many waters, and as the voice of a great thunder: and I heard the voice of harpers harping with their harps:
3 And they sung as it were a new song before the throne, and before the four beasts, and the elders: and no man could learn that song but the hundred and forty and four thousand, which were redeemed from the earth.
4 These are
they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb.
5 And in their mouth was found no guile: for they are without fault before the throne of God.
6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,
7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.
Revelation 7 Easy-to-Read Version (ERV)
The 144,000 People of Israel
7 After this happened I saw four angels standing at the four corners of the earth. The angels were holding the four winds of the earth. They were stopping the wind from blowing on the land or the sea or on any tree. 2 Then I saw another angel coming from the east. This angel had the seal of the living God. The angel called out in a loud voice to the four angels. These were the four angels that God had given the power to hurt the earth and the sea. The angel said to them, 3 “Don’t harm the land or the sea or the trees before we mark the foreheads of those who serve our God.”
4 Then I heard how many people had God’s mark on their foreheads.
There were 144,000. They were from every tribe of the people of Israel:
5 from the tribe of Judah 12,000
from the tribe of Reuben 12,000
from the tribe of Gad 12,000
6 from the tribe of Asher 12,000
from the tribe of Naphtali 12,000
from the tribe of Manasseh 12,000
7 from the tribe of Simeon 12,000
from the tribe of Levi 12,000
from the tribe of Issachar 12,000
8 from the tribe of Zebulun 12,000
from the tribe of Joseph 12,000
from the tribe of Benjamin 12,000
The Great Crowd
9 Then I looked, and there was a large crowd of people. There were so many people that no one could count them all. They were from every nation, tribe, race of people, and language of the earth.
They were standing before the throne and before the Lamb. They all wore white robes and had palm branches in their hands. 10 They shouted loudly, “Victory belongs to our God, who sits on the throne, and to the Lamb.”
11 The elders and the four living beings were there.
All the angels were standing around them and the throne. The angels bowed down on their faces before the throne and worshiped God. 12 They said, “Amen! Praise, glory, wisdom, thanks, honor, power, and strength belong to our God forever and ever. Amen!”
Revelation 19 King James Version (KJV)
19 And after these things I heard a great voice of much people in heaven, saying, Alleluia; Salvation, and glory, and honour, and power, unto the Lord our God:
2 For true and righteous are his judgments: for he hath judged the great harlot, which did corrupt the earth with her fornication, and hath avenged the blood of his servants at her hand.
3 And again they said, Alleluia And her smoke rose up for ever and ever.
4 And the four and twenty elders and the four beasts fell down and worshipped God that sat on the throne, saying, Amen; Alleluia.
5 And a voice came out of the throne, saying, Praise our God, all ye his servants, and ye that fear him, both small and great.
6 And I heard as it were the voice of a great multitude, and as the voice of many waters, and as the voice of mighty thunderings, saying, Alleluia: for the Lord God omnipotent reigneth.
7 Let us be glad and rejoice, and give honour to him: for the marriage of the Lamb is come, and his wife hath made herself ready.
8 And to her was granted that she should be arrayed in fine linen, clean and white: for the fine linen is the righteousness of saints.
9 And he saith unto me, Write, Blessed are they which are called unto the marriage supper of the Lamb. And he saith unto me, These are the true sayings of God.