Sorry but I have to inform you with my very bad eenglish because I am from germany that all of the free VPS hoster out there are scam or have such low memory that it is not possible to run a bot on it. So please setup up a complete Server System on your network or simply buy one for round about 5 bucks per month from any hosting provider, if you only want to run a bot on it. I would recommend you to avoid potential free offers from any sites because in general the world is not for freeeeeee!