@Pepijn If I were you, I"d look into CachyOS, Pop_OS, Mint, or Fedora. These are all good choices for beginners. (I'm sure you'll hear some other suggestions or contradictions from others lol. These are all relatively easy to start with, though)

Regardless of operating system, you'll probably want to install the KDE Desktop Environment, as it is closest to XP / Win10 out of the box. Pop_OS comes with a different DE called Cosmic, which is also easy to use, but will require a learning curve, as it is not as similar to windows.

As for software recommendations:

- Firefox will be available on all of these. I personally use Librewolf, which is just Firefox with some privacy enhancements.

- Freecad/Audacity should just work, provided you download them through your OS's provided software store, package manager, or via a flatpak. (you can google how to do these things if you're not sure. There will be plenty of easy examples.)

- For word/office replacement, I prefer LibreOffice. There are a lot of options here and most hold up well.

- I'm not well versed on photoshop, but i know GIMP (GNU Image Manipulation Program) is a common and capable replacement

- With KDE or Cosmic (or any common Desktop Environment, really) network access /file browsing, etc should be as simple as with windows or mac

- Unfortunately, I am not familiar with vocaster. Hopefully someone else can chime in here.

Good luck and welcome to the linux community!

Edit: Fixed a few grammar things