I have never given my 100% in anything and i feel like a failure.

I am 25 now, did B.Tech in Civil Engineering, graduated in 2022 and unemployed ever since. Initially I decided that I will drop a year and prepare for GATE and other exams but I couldn't clear it as I was half assing it and got distracted by various other things. I decided I will drop another year. Couldn't do it the next year and this year as well, for the same reasons. I did take many other government exams in between but obviously i couldn't clear any. I even tried applying for data analyst and business analyst roles, but failed eventually. It has been 3 years and I have been stuck in this same cycle of "I'll definitely do it this year" but I am absolutely not getting anywhere! I live with my parents and my parents are so done with me. But recently I have grown a liking towards data science. I know it feels like I am saying this because of the latest market trends but trust me I am not.I want to dive deeper in this domain. But I am afraid I will fail to do so again, like the last 3 years. What should I do? I don't want to half ass things anymore and I am tired of feeling like a failure who could not do anything. Also I feel like I need to do something ASAP as I am already too far behind my friends and other people my age who are actually out there achieving great things and doing things I always dreamed of doing. Its absolutely frustrating to feel this way.