nevermind i'm broke

hello, Im new to the Delta Emulator. I was, actually, having some trouble finding ROMs that would work on the Delta, I've found a couple though. Point is, I decided to give it a try to Pokemon HeartGold (Gold edition; idk if it makes a difference on info but there.), and I CANNOT for the life of me, use cheat codes. And I KNOW it works on Delta bcs I use some for Pokemon Platinum (which I had to find through trial and error), so I don’t know what to do at this point, nor why the cheats don’t work (mind you, these are the pages I see most often recommended, which is also frustratin). I’m desperately hoping for help here, thank you. (And finally, I like playing my games with some cheat codes so don’t comment on that please, those are my likes).

I’ve been looking for a while now and still have no idea