I remember one time I installed a lot of themes for my session and I broke something and the themes changed my icon files forever and I had to reinstall Ubuntu!!
Should I just stick to changing my wallpaper and other small tweaks? I don’t really like using vanilla Ubuntu anymore, it doesn’t feel like me. Thank you very much!!
In short, it’s difficult. You have to be careful to only use themes that are are tested to work with your version of GNOME. That’s why while using GNOME, I’d stick with whatever stock theme variants come preinstalled. At least you get a few accent colors on Ubuntu. You can always change your wallpaper. 🥹