14.5 Internet Connectivity Issues

Just went up to the librarian at my public library to ask whether the library has new routers, as since Monday, when I updated my 2023 16-inch MacBook Pro (Wireless (0x14E4, 0x4388)), I have been having internet connectivity problems such as the computer not rejoining known networks after sleep, the computer refusing to connect even when I try to do it manually with or without deleting the known network, and even once or so refusing to connect even after I restarted the computer and cleaned out everything. I also should add that not only have I "reset the PRAM," or whatever, which of course almost never solves anything but is almost without question the first thing "geniuses" suggest, but also that this has happened this past week at more than just the library. It just happens I have spent a larger amount of time than normal at that particular library this past week and I thought a good starting place would be to see if the library was using a newer router or protocol that also I might have been encountering elsewhere too. What do you know, my librarian said, "No, we have no new routers, but I have been dealing with 'finicky internet connections' ever since I did my IOS update on my phone." She added, "Apple never tells you when they install some new security protocol through an update." I said, "Well, I have a genius appointment tomorrow and I am sure they will dance around any purported software issues." I am betting a bug in the new update. Any others out there with same issues? Suggestions? "Reset the PRAM" 10 times in a row?