At what body fat % do you guys start to lose strength? Ive cut

I've never been below 10%, but here's what I noticed

Squat: implodes the moment I go on any kind of cut, regardless of if it's at 20% or 12%, but gets noticeably worse as I get leaner
Bench: have been able to eek out slow progress on a cut, usually can maintain
Deadlift: stays about the same, only ever lost a little strength on very long cuts

>>42094850
ive never train seriously so could just be that this time i ate better and trained harder during a cut and saw increase in everything except bench.

Im gonna keep heading down until i cant squat 150kg. (pr is160) And then try a program for the first time. any good once youd recommend ?
the 5/3/1 just seam like there's not enough training.