The are different types of SD cards, some made for video recordings and most for data storage. Video cards have unusual demands because of the constant cycling. I switched my cams about a year ago and have had no problems since then.
It is very possible that your card is developing read/write problems. There is a lot of info on continuous recording that video cards like the ones in our cams are subjected to. Standard data cards are not designed for it and develop problems, and the cards sold by Wyze aren’t High Endurance cards. I switched several of my cams months age and a number of oddball problems went away. In regard to formatting the cards, best practice is to format the card in a laptop device using the program below and the Full or Deep option which will overwrite/repair any bad tracks which the camera option will not. Here are some resources: Info on High Endurance Cards High Endurance Cards Memory card formatter
Just a followup to my just posted post @earthsci. I’m not guaranteeing my advice will solve your problem, by any means. But I do take my own. I have a pan with an older non-HD card I recently put in my crawl space to try to discover what goes bump-in-the-night there. Went to look at video and no recordings-I had set it for continuous record.
After I posted to you I decided it was time to take my own advice, put on old clothes, got a flashlight and had fun! Put in an HD card and got out!
Long story short? What wasn’t recording is now doing fine! (so far). The break in timeline in the photo is where I unplugged it on the way out and put in a smart plug for remote power cycling.