In tournaments when is ok to open up my range? Are there certain points in tournaments, stack depths, etc. that one does this?

22+BB's is when you can start opening up your range.

GL GL,

HOUDINI9

It's fine to generally play a loose-aggressive style if that's what you're comfortable with. But if you approach the early game playing tighter, you should absolutely open up your range to pressure opponents when you're a big stack near the bubble, near the final table, or anytime at the final table. Exploiting risk aversion as a big stack can be one of the most profitable situations in tourney poker