"I'm not a big bluffer at poker"
Then you are not a poker player. Study more to be able to bluff better, and more often. Higher betting frequencies means more +EV spots, and higher betting frequencies means higher bluffing frequencies and higher successful thin value bets frequencies. You win more money from poker with a structured strategy where you have a significant portion of your range betting as a bluff.
If you always bet your good hands, then what happens when you check? Villain can profitably bluff a higher portion of his range than he would against the any other player, and you lose value. You always check your bad hands, what happens when you bet? Villain profitably folds a higher portion of his check/calling range than he would against any other player, and you lose value. You need to balance those things out to be a tougher player, and a more successful one.
Labeling yourself as "not a big bluffer" is just accepting a leak on your game that you shouldn't keep.
On the question, probably the best spot to play a underbluffing strategy is microstakes 90-man (25c) or 180-man ($1) SnG on
pokerstars or microstakes MTTs in
party poker, or microstakes Zoom Cash Games (or similar). There, less people is paying attention to your frequencies and these strategy flaws get overlooked.