But i feel that crypto and cash are real money the bank balance on my bank account i feel little sceptical yes banks are safe but still i need that feeling that at least some of my funds are under my own control.
You have control over the cash and crypto... as far as the money we keep in the bank, we have control as well, but not total. The bank can limit/deny our access to that money if they think there is a reason for doing so. Of course, it doesn't happen that often and it doesn't happen everywhere, but there have been cases in the world (especially during the coronavirus).
Well, it's simple actually... banks are the "middleman", a third-party service, and with crypto, the need for that "third-party service" is eliminated. We can store/keep coins, we can move them as we like, and wherever we like, we can adjust fees, so basically we can do alone most things that banks do.