These are few things which makes me scared

I am a fully grown adult at 21 so there aren't many things which would scare me but I do get scared of some stuffs.
1) Spiders: One of my biggest fear and one of the reason why I will be in full tension whenever I visit Falakata for vacations.
2) the fear of cooking gas cylinder exploding: I always gets scared thinking what if the gas cylinder used to for cooking explodes as it will be a painful death.
3) while the airplane takes off and lands: That time I feel really scared thinking what if the plane crash.
4) The fear of ceiling fan falling: While sleeping at night I feel scared thinking what if the ceiling fan falls on me.
5) At times while returning from college and walking in our area I do feel worried that if the guy named Arjun comes in front of me and picks on me like he did in high school days. I would be too tired for a fight.
6) I do fear about the fact that I am getting older. I am 21 now and after about a decade I will enter my 30s.
7) I fear that what if I never get a girlfriend.
8) I fear that what if I can never move abroad. Even though I plan to move abroad for higher studies, at times I still fear what if that dream never comes true.
9) if I get chest pain or muscular pain I fear that something is wrong with my heart and feel what if I get a heart attack.
10) I fear what if some guy insults me in front of others especially girls just like my biggest bully Arjun did in high school days. It would be so embarrassing.