Advocate for time, the time you'd spend making those mistakes is going to be a loss on the company compared to convincing your manager (or their manager) to allocate some of that senior dev time to mentorship. This isn't about walking you through tickets step-by-step but make sure that you get smallish tickets in these new areas of tech and ask your co-workers to vet your work (this usually happens in the form of a PR review).

Most (really, honestly, most) developers are interested in the way they do things and aren't opposed to teaching new people the ropes, so I don't think it's unlikely that you'd be able to get this through.