After many attempts to use a wireless mouse (Bluetooth or with a dongle), I keep coming back to a simple corded solution. This Logitech number is less than 10 bucks and it’s immediately responsive and does the job of directing a pointer around the screen without fuss or additional software.
It’s becoming harder to find a mouse with a cord and computers with enough connection slots to accommodate them, but this is essentially the paintbrush I use most of the day. For some silly reason I like the immediate connection.