I once downloaded a bot from github and fixed it a bit. The bot tried first to buy and sell with some restrictions on price and percentage. To be honest, the risk is big, but it was worth it (I made $468 from $50 in a month) But writing interactions from scratch and the bot is not smart enough.
the risk depends on the strategy followed by the bot. if he is arbitraging on some liquid currency pair, and you understand exactly line by line what the code is doing, and there are appropriate safeguards in the code (like stopbot if loss is greater than X), then the risk is practically zero. It's different than a high leverage trading bot trying to play fortune-telling by predicting subsequent ticks based on technical analysis indicators and you completle dont know whats going on in code.
in my opinion, the best solution is to write a bot yourself from scratch, based on strategies that have already been manually tested and worked. The bot only automates what should work manually without it. Nowadays, there is a lot of helpful information on the Internet on how to get a grip on this topic