Where do you typically buy your gas?
I've found Shell with nitrogen additives to be a game changer. More power, smoother running and better MPG.
Also a local car guy recommended Star-Tron with enzymes over Stabil-360 for ethanol treatment.
https://www.autozone.com/fuel-and-engine-cleaners-additives/fuel-additive-and-cleaner/star-tron-enzyme-fuel-treatment-8oz/974763_0_0?spps.s=4371&cmpid=LIA:US:EN:AD:NL:1000000:PER:7170000006052802 9&gclid=Cj0KCQiA-rj9BRCAARIsANB_4ACEJkDAkEmTV3rR_13YdBO7tn3QsBa_mWC AUGUlLsXkzrX67KHtlHoaAvjTEALw_wcB&gclsrc=aw.ds
I use Seafoam before every oil change.
EDIT-1:
What year car?
Brake booster?
I found a brake booster vaccum leak in the hose under the car in the middle, where firewall, engine and transmission all sort of meet up. Large hose, metal connector below, runs to top of engine to intake manifold for vac pressure.
You would not think of your brakes affecting the engine, but there is a connection none the less.
Seasonal fuel/air mixture adjustment was the norm before finding this weak connection.