The purpose of a high IQ is to solve puzzles that other people need solved so they will give you money and status and power.
If you waste this ability on video games and navel gazing about the horrors of existence, you are going to have a bad time.
if by “free will” you mean the freedom to do what you desire, then yes you have free will.
if by “free will” you mean the freedom to choose what to desire, then no you don’t have free will.