I have tried just about every food out there

I like Victor, Nutrisource, Zignature (a bit salty though) and also like Merrick, Wellness CORE, Earthborn Holistics (the Primitive Natural formula is the best IMO), etc. although the latter two changed their formulas so not sure about now hah but they’re still good. If those are too pricey, Tractor Supply actually has a pretty good food IMO called 4Health and they have grain free and with grain. Victor and Nutrisource do too.
Even Purina is not a bad a food as people make it out to be. Their Pro Plan foods are very good especially the sensitive skin and stomach one. You might try that one and see if it helps. It caused my cat to stop throwing up.
The Purina One is good too.
I am personally not a huge fan of Blue Buffalo. I think it’s rather overpriced for what it is. There are good foods out there.
Oh and also Walmart makes a very good grain free food too, surprisingly. I think it’s called Pure Balance or something like that and pretty reasonable. My dog did well on it.
Also I find Chewy really isn’t that cheap anymore. They used to be but not now and I will often find foods for the same price or even cheaper sometimes at Tractor Supply or even the pet stores. So shop around a bit for the best price. Just cause it’s high online doesn’t mean it will be in person.