When I trim a voice memo, can I keep both parts as separate?

I now see that making a copy (then trimming one and keeping the other intact, or just trimming it differently) would be best practice.

Given that I did NOT do that with a memo I was recently trying to keep both parts of, is there any recourse? Can I recover the part of the message that I trimmed away? I now only have :50 of a 30 minute recording. Would love to be able to get the rest back.

As an added complication, I do not see a "recently deleted" file on my phone or mac.

Any help appreciated!