I used to bring home some pretty sour horses, that had been ruined by people.
I rehabbed them and found them good homes with fellow trail riders. I went off a lot of them before I got them re-gentled.
I have never gone off a horse I trained from its beginning, nor any of my Keeper Horses.
Does that mean all those years of getting tossed off a horse somebody else ruined means I am a bad rider? I don't think so.
I've spent my entire life butt sliding my own horses down power lines, and river banks, then knee digging up the other side, without benefit of a saddle, and never fell off.
It would be great if you can ride the rest of your life without going off a horse but it isn't likely --- it isn't in the Odds. Because you've never been tossed, you don't know how to fall to avoid extraneous hurt and damage, so it will probably get you a hospital bill
Learn to tuck n roll, just in case