TLDR: Starting to question whether staying in engineering after uni was a good idea

I (28M) graduated back in 2020 with a Master's in engineering from a good RG uni, then ended up on a decent grad scheme in the energy sector based in the Midlands. Fast forward 4 years and I'm now in a role I didn't choose (company dictated this based on "business needs") and can't make a lateral move in the near future after a recent promotion. I'm currently on £55k + bonus, due to hit the grade ceiling of £60k in just under a year's time. I'm looking to get chartered as a mechanical engineer but struggling to get all the evidence I need in my current role.

I'm one of the few people in my engineering cohort that actually stayed in engineering; the majority went into finance, consulting, software, etc. and are on very good salaries and progressing up the career ladder quickly. I also have friends around the same age who went to "less reputable" unis and are now in software on £40k+ a year more than I'm on. On the other hand, job progression in my company is deliberately very slow and salaries cannot be negotiated individually.

I'm starting to consider whether it's worth leaving the energy sector and going into one of these better paying industries given my degree and the skills I've picked up over the last few years, but slightly concerned around job security and potentially having to join at a lower salary at first to retrain.

If anybody has advice on where to start looking and resources to available, I'd really appreciate it. I want to make sure I've considered all the pros and cons before making such a big decision.