But otherwise I learned the hard way many years ago to just buy Logitech after purchasing a stupid expensive gaming mouse from a brand I’ve forgotten whose left click died in less than a year.
Seems to be a problem in general. I've been using Elecom trackballs for years, first one I bought still works. Ones I've bought in the last year all started wigging out on left click within a couple months. I took one apart recently to swap the mouse switch with a quick solder job and it's good as new. Seems like the newer ones are using really cheap Chinese Omron switches that die quickly. IIRC the older one uses a Japanese Omron switch. The new one I soldered in is a Kailh GM2.0.