I think prayer is an exercise of trusting and getting closer to God, so we are ready for the good He will do. If we pray for a specific thing, it is good that we pray what God has us pray . . . so we are preparing to fit in with His plan.
Exercising to be stronger in trust and closer to God, so we are prepared for the good He will do
sounds good
Do both. Thank Him and make requests > Philippians 4:6-7. Maybe it could be like if you are invited to a family's dinner . . . you want something on the table and you know you are welcome to it, but you trust someone to pass it to you and you say thank you. With God, there are things we are welcome to; but we ask and thank. We are in family sharing with God and one another; so prayer is not only about what is for me.
amen

And He has His overall purpose of changing us to be like Jesus . . . including so we are pleasing to our Father like Jesus is > Romans 8:29 > Jesus in us (Galatians 4:19, Galatians 2:20) makes us more and more sweetly and fragrantly pleasing to our Father > 2 Corinthians 2:14-15 > 1 Peter 3:4 > so, prayer includes our seeking God's correction of His love's perfection > Hebrews 12:4-11, 1 John 4:17 > and then our prayer is sweetly pleasing, most of all about sharing with our Father and delighting Him, but while handling practical things
We need to be changed, and we pray for this.
No, but I know I needed a personality transplant.
Well, God is not conceited. He requires us to pray and worship Him, because in His love this will have us enjoying Him in His own love. If you have someone especially good for you, you want to communicate with the person and you greatly appreciate the person. This is what prayer is, and worship > communication with God who is so good for us, so appreciated because of how He so superior takes a personal interest in each of us.
But this is our example required of us > how God desires for us to also be unconceited and willing to share the very best with any person, at all . . . like He does with us > Romans 5:5.
You are talking about the kind of worship which Satan wants. And you are right > Satan is so wrong, wanting such worship, when he does no good at all to anyone, not even to his own self.
Jesus left Heaven itself, in order to reach us and personally share God's very own best with us. So, God is not conceited