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Depends on which model of time travel you subscribe to.
If you're working under "Back to the Future" logic, then the best way is to not use time travel at all. Butterfly effect and all that.
If you're working under "Avengers: Endgame" logic where you're actually in an alternate reality, then you could muck around a bit without destroying your own "present" though you would be meddling with the destiny of that parallel universe (assuming you subscribe to the Prime Directive, that would be a bad thing).
Or the Bill & Ted's time travel where any changes you make were supposed to be there in the first place so you didn't really change anything.
Good catch. I forgot about the "closed, timelike curve" model
Totally bodacious dude!