(Concern) Frequent bathroom visits

Recently, I suddenly felt that I go to the bathroom too often.

I used to go about every 2 to 3 hours, and there were no issues with that routine, but lately, I feel like I want to go again right after I come back.

I sometimes experience residual urination, but when it's severe, I feel like I need to go to the bathroom about once every 30 minutes. I'm wondering if this is due to a problem with my bladder itself or if it's related to my severe abdominal obesity, possibly pressing on the bladder or something similar.

Are issues like this mostly resolved if I just lose weight?

I'm wondering if the answer is all about dieting or if I should just go to the hospital once.