You said the fee is eating the profits, which means this is not a good bot, for if it is a good bot, you will have enough profits good enough to sustain the fees and you will still be happy with your take-home, especially when the market is nicely volatile.

It's good you ask and I can only advise you to go for long-term trading strategies, bots work best for that and it is no stress for you. The 4H and 12H are cool too but it depends on how you code the system. If it is to trade the timeframes based on a single candle (each candle), you might have enough issues with it. But if it is to trade the entire pattern, it will be fine. Make it trade trend or swing strategies and you will be fine.