Advice/split for beginner gym goer

Hi guys, I’ve been doing pilates for over 2 years now but body weight exercises don’t challenge me anymore and I feel very limited. I started going to the gym (3x-4x/week) but have a hard time sticking to a routine as I don’t know if what i’m doing makes sense so I just stick to my regular pilates routine but with dumbbells. I’d like to focus most on my core and lower body (specifically glutes, hips, thighs), I naturally have pretty broad shoulders so don’t feel the need to build any more muscles there, but keep them toned along with my back. I loved pilates because it really fixed my posture and visually “sharpened” my shoulders and collarbones without any bulk in that area. I track my calories and eat clean so the only thing stopping me from progressing is my current lack of knowledge, and the internet is filled with contradicting information and opinions so that doesn’t help lol. I would highly appreciate ANY advice related to the gym or possibly a rough routine to follow :) Nerd out on me!