I work in tech, fairly well progressed in my career. I earn less than you OP, but if I had London weighting, I wouldn't be far off.
I also have 2 kids, and pets, and a household to run. I finish work, cook dinner (often while checking my laptop for build progress, testing reports etc) but once we've eaten, I'm done. No way could I try training on anything at that time and expect any of it to stick.
What I try to do is wake about 5.30, have a wash, grab a coffee, log on and check messages, then hit my to do list of things I need to read up on, difficult issues that have been escalated to me, and any blockers for my team. On a good morning, I'll sip my coffee while blasting through some training. On a bad morning, I've triaged things before my day starts.
I will then shower, dress, sort my DC, do school runs, etc then get home for my first meeting.
I do go to bed fairly early so I can wake early, but I am really strict that 8-9pm is fir relaxing. Netflix, face mask, read a book, whatever I need.
I also refuse to work weekends. Our entire product would need to be out of service for me to reconsider.
Seems a bit inefficient for you all to be off training and researching the same stuff in your evenings. Could you maybe suggest, and champion, a skill share initiative? You each take a subject, do the training and research, then do a group meeting, 20-30 min presentation, the follow up questions/discussion, to concisely share what you've learnt, and how it affects your team. Would serve you all better, you'd only have to learn the things that actually matter to your company, and you'd all skill up faster. Your boss might even be impressed.