I'd like a bot that works as it should

IMO this is a bug, but I was told by support to make a feature request. My SOL Bybit futures signal bot always buys significantly less than what I set in the initial order (currently it buys around 31$ when I set 50$). They say it is because of the fees (0.055%) plus the rounding.
Minimum SOL units is 0.1, so at current prices if I try to buy 50$ manually it gives me 0.4 units or 41$, but as I mentioned the bot buys only 0.3 units or 31$. If this is not a bug I would like to request a feature to correct it: i.e. a bot that buys what I set in initial order (as close as possible, like in a manual trade) and not 40% less.