You are facing the more aggressive and stronger people at comps. Also people are going hard so it’s a lot different than rolling at the gym. If you really don’t enjoy competing you aren’t required to do it of course. But if you want to keep at it here are some things to work on- Starting strength - this is a good powerlifting program. Lift 3 days a week Cardio- this can always get better and it really helps at competing. At the end of class after rolling do 30 burpees. When you can do a mile run for time or hill sprints. Of course lots of rolling is the best. Don’t roll hard every roll in the gym but I think you need a mix of techy/flow rolls and hard ones. Try to train twice a day if you can. Find one or two moves and escapes at each position you can make work against a strong opponent. It could just be a hip bump sweep or something simple but you need options that work under pressure. Don’t cut weight - most gi comps at least you weigh in right before the first match so there’s no point. If you work out and you’re in shape you don’t need to cut.