Help tips tricks or WHAT im doing wrong.

Im not as experienced as id like to admit struggled with self confidence for years. So climbing on top was never a wajt of mine. Now as im feeling better about myself and actually exploring the sexual realm, i found i have a reoccuring problem..

Im told im tight, but whos to say ita the truth lol iono but a few partners ive been with have seemingly had a problem staying inside. And when i climb on top i have no idea what im doing. Now i really want to WOW this guy im seeing but am terrified im gunna hurt him again(last time i have no idea what i did but he made a comment that it must be amateur hour) yikes right? hellllp anyone want to explain how or give me tricks to use to really wow him for next time i climb on top.