But with each passing day, it also does not become effective because I always lose, no matter how disciplined I am, it still ends up losing in the end, the same goes for slot games
though there is no martingale used in slots games.
actually, you can use a modified version of martingale on anything, slots included.
for example, you start with 100 spins at $0.10 to "burn dead spins", then raise your base bet to $0.20 for another 100 spins, then $0.40, and so on... but as you can imagine, if you don't hit a big base bet win or a bonus before you bust your balance, it's gg. so it's not something i would recommended anyone to try.