How do I get my father to let me do part time job

Im an indian, and my father is against me doing a small work from home part time job for what reason I do not understand. I have to let my friend know by tomorrow whether I will do it or not, but my father is so against it and I do not understand for what reason. Like i just need to have some money for myself by earning it by myself. I dont like using his money for my expenses and he already has a lot going on with his shit so I decided to get into part fime job, since it is paying me to do work from my house. The job is easytoo, health coaching. That's it. Ppl earn millions, and I just want to earn few bucks for my subscription it won't hurt me or whatsoever so why is he acting this way smh and how do i get him to understand that I just dont wamt to burden him with my money problems it is not that deep