Failed my driving test and can't get another booking forever

I failed my driivng test for the second time today. I feel shit.

Everyone keeps telling me to book another test soon. I haven't booked the previous ones as my instructor did that but he can't do it anymore. I really am confused at the website, it's so poorly designed lol. I keep doing research in what to do but it's not very clear.

Currently there's no bookings free at my test centre. I don't know what to do, I've heard some people say to book at any test centre at any time and then change it afterwards, but I'm unsure and again don't really know how.

I know they open on Monday but I genuinely can't book it on Monday (I'm going on holiday abroad).

I also just feel shit as I probably won't be able to book another test until after the summer or later. I was really looking forward to be able to drive over the summer and meet up with friends or whatever, especially when all of them have passed first time so far, but now I can't. It really hurts. Especially now I've failed twice. I'm just feeling so down right now 😞

Thanks for any advice on how to do the bookings (I won't be doing it now but I'll probably try whenever I get up in the morning as I'm tired now) and thanks if anyone cna help me feel a bit better :)