m0useanswered grow question 6 months ago I run my basic on/off fans on schedules of 15min so they turn on and off, they point at the walls or corners not directly at the plants. These fan do not oscillate or do anything fancy.
The fan I got that is fancy is a ac infinity one, I set up oscillation and wind mode so its always adapting the speed and mimicking a gentle breeze, I run this one 24/7 in flower. and then my extractor fan kicks in whenever the Temps or RH get to high. If they are stable it does not turn on all that much.
One thing to note, is cheep fans that use oscillation are a hazard and there are multiple reports of crap ones starting on fire or smoking. If you can, just use non oscillation ones or if you really want oscillation do not cheep out on them.
Good Luck!