Your question: Why are many churches mainly talking about earthly blessings?
Because they are bad churches. People desire health and wealth. Promising believers health and wealth in God’s name is a great way to attract many people to a church. But sadly it has nothing to do with the Gospel.
Be content with what you get
The Bible makes no bones about it: people who imagine that godliness is a means for gain, or in other words, that faith will make you rich, “are depraved in mind and deprived of the truth” (1 Timothy 6:5). Paul tells us that the key to happiness is not trying to get rich, but contentment with what the Lord gives us. And he adds: “But those who desire to be rich fall into temptation, into a snare, into many senseless and harmful desires that plunge people into ruin and destruction” (1 Timothy 6:9).
Danger to eternal salvation
What should you do if you find yourself in a church that is emphasizing earthly blessings rather than the Gospel of salvation in Jesus Christ? Paul tells Timothy “you, o man of God, flee these things” (1 Timothy 6:11). So: get out as fast as you can. Leave that church. It is a danger to your eternal salvation. One day Jesus will say to the false teachers in those churches what He said to the sellers in the temple: “It is written, ‘My house shall be called a house of prayer,’ but you make it a den of robbers” (Matthew 21:13).
Fight the good fight
What should you be looking for in a church rather than an emphasis on earthly blessings? Paul does not leave us in the dark. He tells Timothy: “Pursue righteousness, godliness, faith, love, steadfastness, gentleness. Fight the good fight of the faith. Take hold of the eternal life to which you were called” (1 Timothy 6:11-12).
In the church it should all be about faith in the Lord Jesus Christ. The end of that faith is eternal life. The Gospel is first and foremost about eternal life. While we are waiting for the full and final salvation that will come when Jesus returns, we are to grow in holiness. We are to worry whether we are righteous, godly, loving, steadfast, and gentle. Look for a church that keeps your eyes on the end goal of eternal life and helps you to grow spiritually on your way there.