Have I committed too many sins?

The short answer is no, there is no sin (s) that God cannot forgive. God will save the most vile of vile if he or she repents. “I came not to call the righteous, but sinners to repentance.” (Luke 5:32)

God cannot lie and God promises to save you, no matter what sins you’ve committed!
“Come now, and let us reason together, saith the Lord: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool”  (Isaiah 1:18)

Romans 10:13, “For whosoever shall call upon the name of the Lord shall be saved.” Whosoever means You.
To “Call” means “to appeal unto” that is, “to go to Jesus to be saved.”

Jesus is not dead, Jesus is alive today and will save you.
 Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them.” (Hebrews 7:25)

If you come to the Savior, He will not turn you away.
“All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.” (John 6:37).

Salvation is not a prayer, it’s not a decision to do better, nor a church commitment or experience. Salvation is a supernatural act of God, whereby the spirit is renewed (Born again) in response to personal faith in Jesus Christ.