OMG. Using it for RegEx searches! How had that not even crossed my mind?
I've tried learning RegEx basics and using some websites to point me in the right direction when a specific use comes up, but tuning the search string correctly usually takes longer than it's been worth. Off to ChatGPT it is!
I have found myself using Feedly more these past few weeks as well.
If you're on Android, a great companion is the FeedMe app. It has a lot more customization options and can download (for offline reading) full articles, rather than just showing the snippet Feedly does.