Salvation: 1st, what is it and were you truly saved to start with and if so, saved from what?
Salvation is initially being saved from the sins you've committed, not those you may commit in the future.
How are you saved according to scripture?
When you put ALL pertinent scriptures together to find out what they all say on the subject of being saved, you end up with tge following short list of requirements.
1. Belief and faith in Jesus Christ
2. Confession of your belief as did the Ethiopian eunuch as recorded in Acts 8
3. Repentance as was told to the Jews on the day of Pentecost in Acts 2 verse 38; sorrow for your sins and a commitment to turn from them
4. Baptism into Christ (water immersion) for the forgiveness of your sins (Acts 2:38)
If you've done the above you were saved.
Can you lose your salvation? Yes, as described in scripture such as the Hebrew letter. They were cautioned to not renounce Christ and turn back to their old beliefs. If one does this, the bible says it's impossible to renew such a person unto repentance, Hebrews 6:6
"If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame."
Unless you've renounced Christ and were in fact once saved, you can simply repent of your sins and Christ's blood will continue to cleanse you. 1 John 1:9