My best advice is:

Don't listen too much about what strangers on the Internet say you should do or use.

Non of us has statistics to pull from. Mostly it's individual experience mixed with personal preferences. All that could be different for someone else. E.g. some people will have problems with Nvidia, other with AMD.

Stick to the basic and add fancy stuff later on.

Don't pick a distribution because of the Desktop environment. Or because someone said it has a nifty feature. People create new distros all the time just for fun and not because there would be a real reason for it. Looking on the release cycle would probably be the most basic decision you should take. Read about the differences between "rolling release" and "long time support" and decide base on you personal use case.

Have a backup strategy

This is nothing limited to Linux but since you are planing to switch your habits, there is a high possibility you will mess up at some point. Best would be you try to stimulate the worst case and look if you would be able to setup your system in a VM or something.

Don't be afraid to try things out

Especially when you know that your backup is working. There is not much you can lose. Don't be afraid of using Arch Linux e.g. just because someone on the Internet said it's just for pros or something.

So this last one is maybe just the consequences of all the above. But yeah I guess that's all I could say for now 😅

Well, moving to linux suggests you‘re trying to use it on your desktop, yet the post body suggests you‘re looking for a server.

These are two very distinct projects with vastly different difficulty and complexity levels.

I first made a homeserver for automation (homeassistant), streaming (plex), cloud (nextcloud) and some others. This was fairly straightforward and helped me learn the intricacies of the commandline from the ground up. I have no desktop environment on said server so I was forced to learn to ssh into it and my understanding grew quite fast.

After 2 yrs of this server running more or less without hickups (some minor mistakes made by me), I switched my desktop and lo and behold, it was quite a mess. Desktop linux is infinitely more complex than server linux and the amount of things that can (and probably will) go wrong multiply.

Hardwarewise, you can use the shittiest machine you can find for linux since windows is much more demanding. I even put lubuntu (bc lxqt) on a laptop from 2008 and its glorious! To get streaming in hd pr 4k you‘ll need a fairly strong machine with at least 4 cores and maybe 8-16 gbs of ram.

For the desktop, you‘d ideally go full amd to not have to deal with the mess that is nvidias closed source trashcan drivers. Your games will be all over the place if you play, either they run better, the same or worse than on windows, very few dont work at all, quite a few require tinkering.

But all in all, if you are willing to learn, you‘ll find a distro for yourself. I recently put pop os on a fairly new gaming laptop and it works very well. Mint is the more non gaming variant imo, ubuntu is great for switchers but quite controversial, for more control but also quite a lot more tinkering, you can go debian, arch or gentoo. The last two I consider absolute tinkerers distros. There are hundreds more but thats for later.

Good luck and feel free to update on your progress or ask follow up questions.

I don’t think you should proactively “switch to Linux”. Instead you should “play with Linux”, ideally duel boot and a day will come when you can’t remember the last time you used Windows.

For your photo needs, you could try out RawTherapee and Darktable. They have builds for Windows and MacOS.

Intel or AMD CPU, AMD GPU, any RAM, SSD/NVME, PSU, etc.

For photo editing, if you use Photoshop, you should know it doesn't work on Linux. Your choices are:

• Adobe Creative Cloud Photoshop
• Photopea
• GIMP
• Krita (not the same but it might be of use depending on your use case)

Linux runs great on most hardware. What you described will function fine with a 4-year old laptop or desktop with integrated graphics as long as you have a decent processor (i5/i7 or ryzen 7) and enough RAM (16BG) and an ssd. Two ssds, one for OS and the other for storage is also a good idea.

I suggest ubuntu.

Side note: for photo editing, GIMP or Krita are the go-to apps but neither offer good CMYK color space of you're printing stuff.

Good luck! Don't get discouraged learning new things.