Time travel

 Well if I have the opportunity to travel in time space and thats includes the conditon of can back to "my present" the first thing I can think its go to the future and search the numbers of lottery and then back to my present and buy thats numbers, I don't know if we are talking about one universe without free will and with one future not modifiable or if we are talking about one future with free will and with different timelines that can change with our decisions, but if it is the last option I definitively gonna travel to the future, also how I don't know that, if result be the first option then is not like I can take advantage of the opportunity and at the same time it's not like I can ruin the future with a bad or good decision, I think, maybe depending of context, win the lottery it's no necessarily a bad or god change, and for the same reason I think go to the past can be a little more dangerous, if it is the first option can be a nice opportunity to see how was the world in the past, but if it is the second option it is a little scared the idea of change the "present" to something worse, that is why I prefer travel to the future rather than to the past.