I think everyone has his own philosophy on what’s the best or most effective. You can go push/pull/leg or split it or whatever. The most important part is that you try different routines and find one that works for your body and you have fun doing it. Having the most effective routine doesn’t help at all if you hate it and loose your motivation.
In my beginner times I changed my program every 6weeks or so until I found something that I looked forward doing. For me it’s a split Monday: chest/bi , Tuesday: back/tri, Wednesday: legs, Thursday: day off , Friday: shoulder/abs, and Saturday whatever muscle group doesn’t hurt, Sunday off or light cardio