Just need advice

So I work in retail and atm I’m being furloughed, I’ve worked there for a year. Yesterday I got a call from my boss saying that I need to come in on Monday to re-apply for my job as they are making someone redundant (there are 11 of us that need to re-apply. I’m so nervous as this was my job to fill in my gap year until I found something else that I really wanted to do.

I really want to be a dental nurse and hopefully after a dental hygienist bit is a little hard to get in to.

I’m worried that if I get made redundant then I won’t have an income and I really don’t want to crack into my savings as I have saved for a mortgage (I’m 20)

I am really panicking and can’t sleep (I really overworry) I just need some advice