Most Bible-believing Christians fall into a few camps on whether salvation can be forfeited, and I don’t really know what I think.
Can you lose your salvation?
No. God finishes the work he starts in us (Philippians 1:6), a bad season or even a serious sin doesn’t cost a Christian their salvation.
Walking away from Christ for good is different, that may show the profession was never rooted in him (1 John 2:19) (see this thread).