Tell us about yourself!
now i havent tried this and tbh i probably never will, to go to the future you need to go into space and time will move faster on earth relative to you. However, to go back in time you need to go faster than the speed of light, and not to mention the paradox's associated with time travel. first off light speed is impossible for humans to reach and 2nd, if you go before you built a working machine the machine wont exist and you wouldnt go back in time in the first place. paradox bro.