I have several of the Logitech Circle 2 cameras in and around my home and I’ve come to realize that they are very finicky when it comes to Wi-Fi. In other words, you need a very solid Wi-Fi connection for these to work remotely.
1. Do you have the Circle 2 or Circle View. I believe the Circle View can only connect via 2.4 GHz and the Circle 2 does both 2.4 and 5 GHz (I may be wrong on that)
2. What kind of network are you running? I’ve found viewing my camera feeds remotely to improve drastically when I went to a mesh network (eero Pro 6).
3. You do have a home hub, right? (HomePod, AppleTV, iPad that stays home).
4. Try a test by moving the camera very close to your router and see if you can view the feed remotely. I’ve had issues where I couldn’t even connect the camera to the network unless it was close to my router.