Accessing Server address

Hello Guys,
so I’ve been trying to set up a Nextcloud server using this tutorial:

Got it pretty much all working, at least I can acess files through the Webclient and there seems to be something running.
My problem now is, that I can’t access the server from any other device?
Maybe this is a really trivial question, but I’m 100% new to Linux, Apache, MySQL, PHP and Nextcloud so I’d love some help.
Kind Regards

WSL is really not the venue for running services. You would be better served to run Linux in Hyper-V and then run Nextcloud in a supported OS.

Thank you,
I will try using that.