nothing gaming related works on my laptop

There were no problems a few days ago, and in the weekend i did not use my laptop for other things than school.

Yesterday evening I wanted to play a game of League of Legends, so I started up the application but i came across an error that said:
"There was an unexpected error with the login session. Please try again." This was strange because i never had this problem before, i first thought it was a server problem, but there was nothing reported on their website and i also saw other people in a discord server playing League, so I knew it was a problem with my laptop. I tried updating my drivers, but that didnt work, reinstalling my drivers was also no succes. I thought about reinstalling League itself but because my downloading speed is only on 11mb a second, that would take a very long time to reinstall, as it was already late in the evening.

It worth noting that all no-gaming-related applications, like my browser, netflix, spotify and youtube all worked perfectly fine.

Now comes the next day, which is today, and i was still busy with school and forgot about the problem i ran into yesterday. I still had discord open since it automatically opens when i start up my laptop, when suddenly a friend of mine wants to start a discord call. when i clicked to join the voice call, i ran into the problem of RTC Connecting, which i don't normally get but I have gotten the message sometimes and after a while it dissapeared and worked perfectly fine. but this time a got a follow-up message that said no-route, which I have not gotten before. So then i started thinking and remebered the problems i ran into yesterday, so i started up League of Legends again and still had the same problem. I couldnt find any info online besides network and driver issues. But everything else worked as normal so that wasn't the problem.

I then thought maybe it was a size issue or something (i'm not good with computers and have no idea where to look for). But even a simple game like roblox did not want me to connect. After askign AI about what problems and solutions these 3 had in common and how to fix them, i tried them all, and nothing helped. I tried updating windows, updating drivers and reinstalling drivers, scanning for any virussen or malware, had a look at the firewall to see if it blocked all of the gaming related stuff, but nothing has helped me.

Since im not an expert on any level when it comes to computers and games and stuff like that, i also have no idea how to find stuff. So if someone comments on this post, please provide a step by step guide for me. That would be very helpfull and appreciated

Thank you in advance.

:)