Minecraft multiplayer locked, what should I do?

I got Minecraft java edition, (have already set all my account things) but when I wanted to play with my friends, multiplayer was grayed out and it said that I should allow "join multiplayer games" on my xbox account (already have tutorials looked, but I always come to this page: https://support.xbox.com/...s-xbox-one and I can't adjust anything, I've tried everything possible, but I can do it. Can someone please help me?

Are you sure you have the Java version?

Can you take screenshots of the launcher and the game menu?

Yes 100000% that it is java edition

Did you buy this in the microsoft store?
so speak minecraft for win 10?

No, at Mojang

You have created an XBox account and added Minecraft to your profile. Just read how it works on minecraft.net. Is actually well explained, but you have to do it as explained there.

Do I need my own. Not just a Microsoft account?

Real and improper. Just do what it says in the description.