when i try to enter the server it just seids Failed to login: Invalid session (Try restarting your game)

Have you tried.... You know. Restarting your game?

 By restart it means completely close your game and relaunch the MC launcher

 I did that four times

[Double post]

Are you using a legitimate Minecraft Account?

the server worked before

Try shutting down your computer, leaving it for ten to fifteen minutes, and then turning it back on.

Now  it doesn't even finish loading minecraft it just fresses.

that is odd. 

 I mean like minecraft is freezing 

 Are you using a legitmate minecraft account though? one you bought from Mojang themself?

 I got the full version for free and from mojang themself and a mojang account.

How? free accounts are sketchy

 Honestly I don't remember it was a few years ago.