you have the right idea with the chorus being absolutely necessary to get that metallic brass texture but I think the way you've gone about it with the reverb and tube choke a lot of life out of the width it's trying to provide; it's paying too much of a price for grittiness. I don't know if realistic is what you were trying to go for but if it was I could invite you to a draft to study and take a look at what I've come up with on this front
Honestly, you have a different approach in your draft. I like that you split the brass into different synths for more control. I may do some adjustments to the sound, but the very gritty texture is a very essential part for me. Might EQ it a bit differently, or do slight adjustments, but I'd certainly try to stick to how this sounds, even if it is a bit synthetic sounding.
stop doubting your music potential, asking for help is fine, considering everything that comes out as trash or bad instantly is bad.
the song is really good, the bass has a bit too much high end that is kind of annoying and it needs a bit more stereo minipulation, maybe make the bass wide and the other elements be reverby and but mono.
I wanted to achieve a gritty, relatively realistic brass/foghorn sound with the bass. I like it this way. Sorry if I made it sound like I think this is trash. There's just some reserves that I may not be hearing, as you mentioned.