No matter how much I pee I still feel like I need to pee? When I sneeze I pee my pants sometimes

Two problems. On one hand seems you have some irritative symptoms which could be due to urinary tract infection, incomplete emptying of bladder or other cause. On the other you seem to have stress incontinence which is common as you get older. This may be treated with meds, but first you need evaluation of the constant sense of needing to urinate. I think you need some lab testing and a visit to your doc.