This strategy has been discussed many times before and as others have said this will not work.  There are two main issues:  1. bank roll isn't unlimited.  2. Casinos have maximum bet limits

I know a streak of 20_losses seems impossible but it does happen and unless you have a near unlimited bankroll you will get cleaned out.

Casinos have max bets to actually discourage whales from coming in and doing this strategy.  All it takes is a few huge bets and a casino could be in serious trouble.