One day I said: if I find it, I'll pay as much as I can in fees up to 5 BTC to win just 1.
If the Bot comes with RBF, it will have to lose more than 5 BTC in fees

won't win 1 but it will lose 5
Bots don't care about the initial fee, whether it's 100 satoshi, 1 BTC, or 5 BTC, so your strategy makes no sense and is just a nice way to throw away BTC out of frustration. They will simply increase the fee up to the maximum possible (100%). Maybe add another input and set a total fee of 7 BTC, to make sure you simply donate everything to miners. They will appreciate your effort, and the only thing you get in return is that your TX is mined.