BG info: im 5’9, 18yo Male, 140 pounds, eat 1800-2200 calories a day, high protein, low carb, roughly 12 or 13% body fat

I work out with weights 4 days a week (push, pull, core, and legs) and the regimen has been working very well for me but I’ve plateau’d out as of about the past month and a half. Cant seem to pin it to any one factor except maybe the amount of basketball I’m playing; I play around 1 hr and 15-30 minutes a day, every day that I can except when it rains. It’s not even something I do for workout regimen, basketball’s just my go-to when I’m home and bored. Is this becoming a detriment to my gains or should I change up my workout regimen, which I try to keep varied to begin with?