Scared of going out.. Watch
What is a bunch of TSR users going to tell you?
I would suggest that you get help for your mental health. Staying at home all the time is much more likely to cause you harm in the long term than getting out and about and living your life.
If I was at school, highly likely because I am very short for an average 18 year old, but I left at 17 due to personal reasons and also due to the fear of getting out of my house. I also normally get bullied at school a lot when I didn’t do anything wrong. I am not at school though so unlikely.
I have severe anxiety about going out of my house because of the stuff that is going on nowadays like stabbings, bomb attacks, acid attacks, shootings, bullies/kids killing people etc. I just don’t want to die that way or be a victim. The only place that I feel safe is at home.
If you want to try getting out of the house more, could you start by going out on small visits to places close by to your home e.g. local shop. Maybe go with someone and slowly build up the amount of distance you go, and then maybe go out without someone. Kind of like a DIY exposure therapy. However, it may also be worth seeing if you can get online CBT from the NHS - you can often self refer online.