Is there anyway I can deal with pressure on offense from a defender? And how can I improve my dribbling

So I just recently started training to get my vertical higher to eventually try to be able to dunk. anybody got any tips?

I used the ai jump shot analyzer, and got these two critiques, the elbow is just repetition, but I the guide hand one, I don’t exactly understand what I’m doing wrong, if anyone can help based off just the text that would be amazing.

Hello! I’m a 6ft freshmen, combo guard. Currently doing online school. I’m here to get advice on my game, and track my progress. Next year I have lofty goals of making varsity, and actually playing, at a public school next year. Short term goals/improvements are to work on my body specifically explosiveness, vertical leap, and conditioning.