I agree, hit muscle groups as frequently as possible. U will get more growth doing like 3-6 sets of chest 3 days a week than 9-18 sets once a week for sure. Again total bro science but I feel like thats been especially key for me in this cut.
I dont know about squats (I love em) but you should def have some kind of big compound quad movement. Regular deads are not really an aesthetic move, something like SLDLs or GHRs would be better and are more an accesory than main lift.