Try focusing on just one thing you really enjoy instead of comparing yourself to others. Don’t worry about wasting time in the past, just make a plan from today itself.

Don’t worry too much now. Focus on your current studies and internships. Have a general idea about your preferences and keep your options open. You can decide your specialization in final year.

Don’t listen to that ^ guy, cheating won’t help you learn the material. I would be happy to help explain some example problems for you, just send me a message! Good luck!