@Reinhardt sett is a group of rep(etition)s.
In general, more weight, less reps, 3-5 sets will help build strength initially, but eventually I got stuck at some weight on each exercise. After that I changed it up with pyramid sets (start light, high reps, increase weight and less reps). I was gaining strength doing 4-5 pyramid sets, but I was strongfat, not ripped. I was on it hard for a year and gained strength quick especially on my squat. I didn't do enough grip work and my deadlift wasn't very good. I refused to use straps for deadlift and you should too if you're doing them.
Bodyweight exercises are ok, but you aren't going to notice any increase in strength gains. Doing a lot of pushups and situps is good for endurance and mental training/endurance. If you want to get hardcore start working on training knuckle pushups and fingertip pushups.
As far as pullups go, using the machines and doing rows is not the same as doing a raw widegrip pullup. If you can't do a pull-up, you should do what's called negatives. You don't have the strength to pull yourself up but you will have strength to control yourself on the way down. Jump up so your chin is above the bar and use your muscles to control your fall focusing on activating every muscle you can to do so. You will likely also need to be doing weight training to get strong enough to do a full rep. If you go down the rabbit hole, "kipping" is not the same thing and is overall retarded. Just jump up and control yourself down.
I'm still experimenting and searching for a healthy balance between strength and endurance. And don't listen to bro science, cardio is good, just remember running is very high impact on your joints. There are other cardio alternatives that aren't as stressful.
