dead end at 17

I'm currently in Y13, about to sit my a-levels in the summer but after that I'll be taking a gap year because I just didn't think I was prepared at all, but on further reflection it's just because I feel like I've backed myself into a corner with my a-level choices, because now the only possible career option to take is law, which everyone in the world discourages: there's too many people taking it, if you don't go to a russel group university, you'll make pennies, the job itself is monotonous and boring. I come from a family where both my parents studied in our home country, and they get paid little for hard jobs, so money has always been important, but guidance on education has never been avaliable. in other words, iIve hit a dead end already at the impressive age of 17, and messed up my future. I'm very scared and don't know what to do ... my choices are English lit, Religious studies and Classics. I know how it sounds, but please don't be mean, as at the beginning of Y12 I really did think law sounded good. I'm just very regretful, as I was only a few marks away from being able to take biology, even though I know I never would've taken chemistry needed for the medicine route. I've just been so badly disheartened and it's only been 2 weeks. My main concern is the money, because I've seen how my parents struggled, and I know I should've picked a more financially secure route then but it's all over now. The last summer exams I got were AB and unmarked for English because everyone's failing. And I know myself so I won't be able to achieve the A*AA I need to even go to a russel group uni. My friend told me to look into an apprentice degree and honestly it seems too good to be true for law. I just really need help.