Can't access Jellyfin from any device other than the host

[Gigigina]

I just set up Jellyfin but to be clear this has happened on literally every service I've tried to use that is supposed to be accessible on a local network so I definitely think it's an issue with my set up somewhere and not Jellyfin itself.

I set it up and it works but only on the host computer, I can't access it on my main PC and I can't access it on Roku which is where I wanted to use it, using the link to access it doesn't send me anywhere and it just tries until it gives up and says it timed out. I've tried looking through other guides on setting this part up but I'm not finding anything useful to me. My host PC has a set IP address (so it doesn't change) so it's not that it's different to how I'm putting it in, I can't use it if I disable the firewall on both my router and my PC, tried everything here (https://diymediaserver.com/post/troubles...ss-issues/) so I'm unsure of how to move forward.

Here's the log file https://pastebin.com/1jU3y1Ae
I don't understand it myself but maybe it's useful. If you want me to delete the massive gaps, I can do that, I just posted it as the log was when I looked for it with journalctl.

Also I'm on linux (endeavourOS if it's relevant) so I might need help if you give advice that's centered around like windows defender and that.

Thanks for any help

[Gigigina]

I didn't realise a reverse proxy was necessary for this, I found a few sites that did mention it in the guide. I guess the ones I saw either didn't explain what they were used for or assumed that it was for a single device.
I'm having issues setting that up but that's an issue unrelated to jellyfin itself so I won't be posting that here

[bitmap]

FYI, you don't need a reverse proxy to access when you're on the same network. You just need to set a static IP for the server and use IP:8096 (or whatever port you set for HTTP) and access that way via Roku or your main PC. A reverse proxy is only necessary for access outside the network.

[Gigigina]

FYI, you don't need a reverse proxy to access when you're on the same network. You just need to set a static IP for the server and use IP:8096 (or whatever port you set for HTTP) and access that way via Roku or your main PC. 

 I'm so confused though, I keep looking for videos that go over how to set it up but they just access it from another device with no problem. I have a static IP, I use it for my sambashare but I can't access jellyfin at localhost:8096 or anything aside from the host computer. It doesn't make any sense to me how it seems everyone else doesn't have any issues on this step at all.
Do you have any ideas? I couldn't even set up the nginx properly, I did all the steps afaik and it says its running but I cant access the site I bought a domain for even on the host computer.
I feel like my computer is cursed

[pxr5]

Please, just forget reverse proxies. They have nothing to do with your problems and going down that route is only confusing matters.

Let's get back to basics. What is the IP address of the host machine? Let's say it's 192.168.1.30. How do you try to access it? It should be 192.168.1.30:8096. On your host machine you are entering localhost:8096 right. What happens if you type 192.168.1.30:8096 on the host machine? Start there and give your results.