I’ve been going to the gym for a few months, still feel like a noob tho.
I track what exercises I do, weight & reps, etc, and try to rotate between the different exercises I enjoy.
However I don’t do leg-centric days or anything like that, I just try and do a variety each week and not go too long without exercising specific areas. Is that bad?
No, and there is research that suggests training muscle groups multiple times per week provides more opportunity for growth.
Think that you want 10-20 working sets for all of your major muscle groups per week. It’d be difficult to get all of those in, with sufficient effort, in a single workout. Much easier to accomplish the same feat if splitting the effort into 2-3 efforts per week.
There are other schools of thought, of course. I think ultimately as long as you’re getting sufficient volume and are progressively overloading, you’ll be fine. Try to not overthink it.