Hello everyone i need help

Hey everyone,

I’m a complete beginner and I can train 3 times per week (about 1.5 hours per session max).

My main goal is to lose fat and build as much muscle as possible.

Is a Push Pull Legs (PPL) split good if I only train 3 days per week, or would a full body split be better for a beginner?

If PPL is okay, which exercises would you recommend for each day?

Also, how many sets and reps should I be doing per exercise as a beginner?

One more question: If I’m doing 3 sets of 6–8 reps, and in the last set I can only do 4–5 reps with the same weight, should I lower the weight to stay in the 6–8 rep range, or just finish the set with 4–5 reps at that weight?

I can go to the gym Monday, Wednesday and Friday.

Thanks in advance!