Jan, I found your story so relatable. I also had an obsession of scrolling shelters, even Kijiji. I'll get to that later. We lost our cat in March and adopted our newest kitten, Huey in May. It was the best decision ever. I hope you find your best match.
Please be very careful about buying from Kijiji or Craig's List. Years ago, I bought a ragdoll cross who ended up almost dying within days. Through the heartache and big expense, we ended up rehoming him to the specialist who treated him.