Advice on taking potential RE opportunity vs trying to transition to quants

Hi guys first time post.

(UK)
I’m 22 turning 23 and feeling like I fucked up a little. I was always strong at maths and greatly enjoyed it but decided to graduate in envsci (first class, highest in cohort and award for excellence (RG university)) for bsc and it’s really limited my master options. I have had two internships this summer in re investment advisory and as an analyst in re dev.

I have an opportunity in September to study RE finance at a good B school (Non RG) or to study pure maths at my hometown university (RG, QS 150-170 range). If I took this I could stay at home for 3 more years, get a harder STEM degree and keep my mum company while she cares for my grandma (late stage Alzheimer’s). I also feel like I have something to prove since I dropped out of an EE degree due to being completely hit head on with the workload from me being lazy during A levels.

Alternatively I have a more general return offer to intern for a year with different aspects of the REDEV business such as DM, ESG, finance and analysts).

My life feels very out of control at the moment and I’m looking for advice on if I could realistically be competitive for good MFE courses with an ~ okay ~ first class degree in maths (lower RG) plus a first class degree in env sci (I can’t attend another university due to money). Or whether I should take the opportunities I have been gifted in real estate and swallow my pride.

As a note: I am terrified of AI taking analyst positions and feel very exposed in RE for that reason.

Can anyone with more life experience than me drop some wisdom? Am I stupid?