Get yourself a good firewall(router) such as a newer SonicWall
I would also mention to have a specific firewall device that is separate from the router. Not an all in one. I didn't look at the SonicWall, so I'm not specifically talking about that product. Just make sure that there are separate devices.
I do find it strange that so many people use the Windows built in solution (like I said, I had heard good things about it, don't know how true it is, but that is what I have heard). Given that Windows hasn't had that great of track record with security (remember the 9X generation (although it was a helluva lot easier to remove bad stuff back in the day, but boy the normie user wouldn't be able to handle that now)?) and of course, the legacy bloat that everyone loves because it allows them to continue to use their older software longer, but comes at a security risk. Windows 10 still had some elements that dated back to Win 95 (I would imagine that there is some still in there in Win 11). That's a little long in the tooth in my mind. And plus, they no longer have an internal QA team and haven't for a looooonnnnnngggg time.
Encrypt your data. Good point. How many also encrypt their OS drives? Now, the last time I installed Win 10, I don't recall that option on install, for those that bought pre-built computers from a box store, I doubt it was done there, even if there was/is an option.
User accounts. How many just have one (assuming local account, if having to deal with the new policy of needing an MS account to first get your computer setup and haven't setup a local one after that, that's a whole other can of worms in my mind) and that is the admin account. Password, or no password? I know a lot of people that don't have a password on their admin accounts that run Windows back in the day of local accounts only (now they just do the MS Account thing and that is far worse in my mind). Those that have a su password on that single account, how many have it set to login on boot?
Over the years, MS/Windows has sacrificed security for convenience (they had made steps in one area, only to go back in others) and like some other OSs that I can name, abstracted a lot away from the user, so the normie user is obligated to those conveniences.