Signs scared

So at night I have these intrusive thoughts that I leave the door wide open. This causes me to fear that someone will walk in the house and harm my family. I also have this back massage device. I fear that if I leave it plugged in on accident a fire will happen. So I went down to make sure that it was not plugged in. The thing is that I never used the massager that day. When I went back up I felt like I opened the front door (an entrance to my house) even though I didn't. I had to get my wife to check the door other wise I would not have slept. When I checked it I became more insecure. This has been reoccurence with me.

Recently a deceased tenant was found in apartment next door to my mine. This is an extremely distressing situation and I am unable to let go of replaying the images of a funeral service removing the body through the hallway to the elevator and the super foul odor. This has made my living situation unbearable. I am hoping the landlord may allow me to relocate to another property/unit but my lease is not over for 6 months. They covered one night at a hotel while they ozone the air and hired a cleaning crew. Nonetheless I am immensely obsessed the air is still hazardous and another tenant will be found next to me again! I am compulsively holding my breath, blowing air out my nostrils, keeping the window open then close, spraying air freshener, avoiding the frequency of passing through the shared hallway, not going in the elevator, repetitive looking at the shared wall and their door, not touching the shared wall. Obsessed haunted presence. Obsessed I will get sick and die breathing in the air of the decomposing body. Obsessed with death the fear of the unknowing, what if no one found me like the tenant (7 days), how I will die, when I will die, what happens after death, being buried alive or cremated alive! Fear it’s not in my control! Fear how others will die! When others die! Especially my dog!! Fear I won’t be able to cope when my dog dies!

I don't know if this is super OCD related, but it's just there are so many things I want to do in life, but I'm scared. I want to apply for this restaurant waitress job near me, but I'm worried I'd be terrible at it as I have no experience and I'm worried they wouldn't train me properly. What if someone has an allergy and I accidentally serve them the wrong food and they have a severe allergic reaction and something awful happens and then I'm sued or go to prison? It feels like there's so many things holding me back. What if I give someone a drink but a piece of my hair falls in? It just feels like I'm never going to be able to do anything. I've never tried anything, never properly stepped out of my comfort zone, never had any kind of job. So I'm so nervous to try anything in life because there are so many things that could go wrong.