More meaningful jobs after big4 audit?

So to give some background, I did a liberal arts/Econ degree at a red brick, graduating in 2016.

I then went and qualified with a small firm in audit. I've always liked numbers and didn't hate it there but it was very underpaid and they're struggling to maintain their existing audits, let alone grow the firm!

I went and joined a London big4 and it has been okay. I have been here for a year now but I am completely at a loss as to what to do after - I know this board is mainly for students, so I might be looking in the wrong place, but if any one has ideas of things they've gone into where they were genuinely happier and felt more 'part' of something, please let me know!

I am not particularly fussed about earnings, going to the big4 netted me substantially less than industry but I know one thing for sure is that I'd get bored doing monthly management accounts.

Are there any new/exciting areas to get into? I'm prepared to put in some more studying to get there but finding out the 'what' is the big issue, rather than the 'when' or 'how'.

Thanks for any ideas!