Cousins using my youtube account?

During the summer, I logged into my own youtube account on my polish grandmother's computer to watch videos. My younger cousins also share that computer, which like to watch Minecraft videos, gaming, etc.
FFW a few months later, in my search bar, there have been recent searches that I didn't do. I guess I forgot to log out of that account there. I'm pretty sure they are my cousins (they are typed in polish, and they are gaming videos). I also have new subscriptions to channels which I didn't subscribe to. Does anyone know how I can log off my account on that computer, or message them to log off? It's my account, so I can't exactly message them lol.

Child refuses to clean room?

My son is a terrible child who refuses to clean his room no matter how messy it gets, I yell at him constantly and all he will do is make up excuses that he is to busy with his job or school or that he is playing minecraft. I figured if he must want to live like a garbage man so I started to put all the house trash in his room and started to call him Trash Child in front of his friends to embarrass him but to my shock those snot nosed devils liked the name and now call him Trash child as a new cool nick name and he actually enjoys having trash in his room! Why can't he be more like his sister who is the best child in the world, she loves to clean the whole house and gets straight As in class and even went to middle school early! I'm at my end here what do I do to punish this spawn of Satan and get him to clean up the trash I put in his room before we get rats. Hes 7.

How do I play fortnite?

So I started playing Fortnite a while ago but I can't seem to get the hang of it.
I can only make houses made of dirt and the skeletons and zombies keep killing me at night. I can't seem to find
any diamonds as well. I've tried getting my friends to show me what to do but I just don't get it.
They say I should just play Minecraft, but I'm not good at those battle royale games.Help?

I've tried to contact my brother to help me play but he's busy saving his cow Geoffrey from our parents. That cow was both mine and his best friend, he always told me how much he loved me. That cow was the greatest guy ever, he had a british accent and made me feel like a right dumb guy. I'm a virgin and I really want assistance in getting a girlfriend, too. I tried the cows but they just didn't work.

How do I fix this Minecraft graphics problem?

Last night, I purchased Minecraft Java on my Windows 10 gaming laptop. Everything was fine at first and I used the launcher to open Release 1.0 for fun. But when I then reopened 1.13.2, the graphics were all messed up and looked like the graphics in Alpha. I uninstalled Minecraft and reinstalled it twice, but I still had the same problem. How can I fix it to get the normal, correct graphics back?

Why does my life suck?

I'm done. I'm just done. I work insanely hard everyday just to maintain B's in all my classes. Everyday, nonstop. Nothing changes. All my so called 'friends' wouldn't really care if I was there or not. Some actually wish I would just leave. None of them include me in anything they do outside of school. I used to hangout with some outside of school, but I quit doing that because it was always me asking them if they want to hangout, never them. A few people do try to include me in things, I know it's just bc they feel bad for me, but I just end up pushing them away. I just sit at home all day playing fking minecraft and terraria because I have nothing better to do, and I don't enjoy anything else really. Hate sports, have played a lot in the past. I basically have no hobbies. I have tried changing. I tried changing everything about me. The foods I eat, the cloths I wear, how I act, what video games I play. Nothing changed. I hate my life. I'm at a standstill for what seems like will be my whole life. Don't tell me to talk to someone because I'm way passed that. Don't tell me things will get better, because I want it to get better now as I feel like I'm completely missing out on everything in highschool. In the direction I'm going, I'll be the next kid that is announced at my school that has passed away.