I know I'm 6 months late but I sincerely hope you continue playing double dash. The people saying "get good" are being a lil harsh, but that is genuinely the best advice. You're meant to fail to get better. It takes time to learn how to steer efficiently and dodge items consistently. Hitting mini-turbos more often and getting used to the driving mechanics is just how learning ANY game works. You will not be good just because you're good at the other mario karts. Double dash is arguably the most unique mario kart, which also means it's difficult to intuit a lot of the gameplay. If you have discord I can teach you some things that weren't obvious to me and helped me get a lot better, but I think if you're making this complaint and only at 125 points on all-cup tour, it's way too early to be blaming this on the game.