I made an avatar based off Yosuke Hanamura from Persona 4. Here is the picture I used as reference:

What I would like to change are the jacket and the twin knives. Are there any better black jackets, preferably with gold buttons, and dual-wielded daggers? I also don't think there are any black and red headphones except for the bolldred ones that are dripping with blood.

Black Military Pea Coat - i like this one more than the one you wear, but it has double rows of buttons :c Bootlegger Fresh-Pressed Jacket - has vertical stripes, but looks messy Grooms Jacket seems closer to your desired jacket

just a few ideas. good luck

Here we go: I'm gonna admit right now that I haven't played this game, and I know nothing about this character, so I'm sorry if some of these suggestions are silly in context, but hopefully some you can use. :3

Subeta is a bit lacking in non-dumb looking weapons, but here's a few somewhat basic ones that might work for you:

For coats, this is what I found. I don't think there's anything that specifically has a single set of gold buttons, or is as long as the one in the picture, but I think some of these are pretty close.

Here are some headphones that might work better than the ones you have now:

And finally, some hairstyles that might potentially be closer to the character than the one you have now. (these are all wigs) Admittedly, some of them are fairly expensive, but you don't have to use them if you don't want!