I am going to assume multiple things here:
- I can’t change the past in any way.
- I can’t travel to the future.
- It is against the time travel rules to interact with past me.
Those rules make it easy for me to go somewhere fun instead of being noble and using the power to save people.
If I could I would travel back to August 1969.
I love the music from that era. I have read a lot of history from that year since it was the year I was born. I have watched footage from Woodstock. I don’t think a Woodstock is possible today without a multitude of problems. I would love to experience the historical performances. I would even be OK experiencing the rain and the mud.
I will leave the noble act of saving people to someone else.