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Ooh thank you! Very helpful advices.
I'll do more web building tests in the future, as you said.
Also (going a little off topic), I can see you are a Linux user or at least have a lot of Linux / Unix world knowledge.
I only have a basic theorical University-knowledge about Linux world, so I've never really used a Unix OS for coding/gaming development purposes.
I recently used Zorin to recover a very old Laptop and I really liked it, and tried Ubuntu on a VM, but exactly as you said it was not a good experience. If I had to create a new partition on my Windows pc, maybe only for coding and game development and no more, what would you suggest out of the OS you presented me?

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Well, for code experiments generally Arch and Arch-based stuff are the best since they have AUR, which allows to make and share packages very easily, which in turn means that there is a literal sea of packages.
Also Arch and Arch based OS's enjoy literally latest versions of everything as soon as they are available (so called rolling release).

I personally use Arch both as a daily driver and a developer workbench. 
However, that incredible flexibility and bleeding edge comes with a cost - even Manjaro in the long run may need a significant maintenance effort (unfortunately again have friends which had troubles with maintaining it).
It is not just sth you can install and forget about it.
And stock Arch is not even meant to be installed by an installer but instead you do it manually (quite easy, takes 10 min when you're used to it, but helps understanding how things work).

If you want almost all the coding stuff and godot (except for maybe some more esoteric and/or youngest  unstable tools)  without having to go into how Linux actually works and how to maintain it, i think you can easily go for any of Mint (though i haven't checked it for a while) or MXLinux. Maintainance and stability-wise Fedora is also pretty ok though it is a bit more "professional" kind of OS.

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Note:
Linux'es generally go in different flavors, mainly in terms of default Desktop Environment, like KDE, XFCE and LXQT.
While amog DE's KDE is probably the best in terms of HiDPI scaling and touchpad support (useful for laptops), it is also quite resouce-heavy and can be more easily broken because of its complexity.
The lightest DE's on the ther hand, have varying degrees  of touchpad support.
On my personal laptop though i hacked life and just use a DE which DOESN'T REQUIRE MOUSE AT ALL ^_^ (dwm). And it is probably _the_ lightest DE (comprised of around 4 .c files.)