I am looking for a distro with a customisable UI. I want the ability to change everything in the UI: like changing the window borders style, animated interface, creating transition animations. Something that can allow me to create UI from my favourite video games. I am even willing to learn a language if needed. Just don’t suggest arch because I’m only interested in visuals. I don’t want to spend time creating and troubleshooting other aspects of os. Also, if above requirements can be achieved with changing the desktop environment, please suggest that too. I am somewhat familiar with Linux as I used it a few years ago for some time. Back then, the games’ support was lacking, so I switched back. But now with steam os and proton’s contribution, games shouldn’t be a hassle to run.
You can get a customizable UI on any distro, it will depend on which desktop environment or compositor you choose. Though if you use a slow moving distro like debian it might be a while until you get newer stuff unless you are on the testing branch.
A desktop environment will include everything you need (bar, power menu, notifications, etc) and be configured to work. If you choose KDE, you will be able to customize a lot. Or there’s also Cosmic that’s still in alpha but will be out soon I hope, it allows for both floating windows and tiling windows, so you can try both and see which you prefer.
If you choose a compositor instead of a DE, it will draw your windows but will not do anything else, you will have to install and configure a bar, a notification daemon, etc, or you won’t have any. In that case you have several options :
Didn’t know about compositors. It looks more promising than using DE. That you for all the links you provided.