Asking the saints to pray for you is no different from asking someone in your congregation to pray for you, because the saints are alive in Christ, members of the Church Triumphant. It is not worship, because the saints are not adored but merely venerable. God alone, the Holy Trinity, is worthy of adoration.
All Christians are saints. In the Bible, there is not a special class of believers called "saints".
Ephesians 4:11-13, "And he himself gave some as apostles, some as prophets, some as evangelists, and some as pastors and teachers,
to equip the saints for the work of ministry,
that is, to build up the body of Christ, until we all attain to the unity of the faith and of the knowledge of the Son of God—a mature person, attaining to the measure of Christ’s full stature.
Acts 9:32, "Now as Peter was traveling around from place to place, he also came down to
the saints who lived in Lydda.
Acts 9:41, "He gave her his hand and helped her get up. Then
he called the saints and widows and presented her alive.
Acts 26:10, "And that is what I did in Jerusalem:
Not only did I lock up many of the saints in prisons by the authority I received from the chief priests, but I also cast my vote against them when they were sentenced to death."
Romans 8:27, "And he who searches our hearts knows the mind of the Spirit, because
the Spirit intercedes on behalf of the saints according to God’s will.
Romans 12:13, "
Contribute to the needs of the saints, pursue hospitality.
Romans 15:26, "For Macedonia and Achaia are pleased to make some contribution for
the poor among the saints in Jerusalem.
Ephesians 1:1, "From Paul, an apostle of Christ Jesus by the will of God,
to the saints,
the faithful in Christ Jesus.
Phillipians 1:1, "From Paul and Timothy, slaves of Christ Jesus,
to all the saints in Christ Jesus who are in Philippi, with the overseers and deacons.
Phillipians 4:22, "
All the saints greet you, especially those who belong to Caesar’s household.
There are many more references but if you believe God's Word, then "saints" are not a special class of people venerated by their deeds, but all people who have been born into the kingdom of God.