i mean if you want to play solo surely there are games that are more to your liking than mmorpg...
with exception of tiny bits current content wow was never meant for solo players, so complaining about that is a bit like playing counter strike and complaining that its too violent...
as for PUGs, do to my work schedule i pug a lot, and have basicaly zero issues, from my experience people who complain how pug is toxic or unfriendly are usualy the reason behind it...