I'm looking for a way to automate my trading view alerts

i need something/website similar to the one i attached below except i wasnt to enter in market order/ exit (take-profit/stop loss in limit orders), want to also be able to adjust size of trade.

i can use 3 commas but my problem is i cant adjust my trade allocation in percentage terms so that way my profit is reinvested, if you have a solution please let me know.