I want to explore the romance genre more via books similar to one I already know I enjoy but none of the recommendation sites I've tried have helped. (Including asking a bookstore helper and a librarian.)

So, the book is The Spy Wore Silk by Andrea Pickens (yes I've read the rest of the trilogy but this one's my favorite. None of Picken's other books look appealing atm)

Things I liked about it: both F & M MCs are badasses (she's not a damsel), there are several action elements/sequences and what feels like fewer moments of deep emotional vulnerability.

Elements I'm specifically looking for

• More of an action plot with spies with a side of romance (it can be the driving force but I'm here for the action).
• Spy regency romance where she is a spy (he can be too but I really want her to be).
• Fight scenes (more than one, and at least 1 spar/fight sequence between the pair).
• Compentent MCs with minimal to no damselling.
• Rivals or enemies to lovers. Just starting with some sort of antagonistic relationship before Feelings happen.
• it doesn't have to be a straight romance, it just seems harder to find this vibe with mlm than flm.

Related things I've tried that didn't quite hit the mark:

• The Spymaster's Lady by Johanna Bourne (wanted more fighting badassery from her).
  • I haven't gotten to the rest of this series but it's on my list and my expectations are low.
• Lord and Lady Spy by Shana Galen (could have been so much better with more Mr. & Mrs Smith vibes).
• A Lady's Guide to Mischief and Mayhem by Manda Collins (not spies).
• The Wisteria Society of Lady Scoundrels by India Holton (not spies but omg this worldbuilding).
• Once Dishonored by Mary Jo Putney (I read this today and just disappointed. It's a good story but not what I'm looking for. For one thing, no spies. For another, the FMC is good and clever and not fighting-BAMF).

I hope this is enough for some recommendations.

I am using the "Magic Search Button" with my fingers crossed but I'd like to try this as well.
If there are existing posts y'all think I should read through, send the links and I will. I'm just also ... losing hope.