Player A who has played for many years just wants to level quickly. The majority of the players on retail are player A-types.
For the vast majority of the player base levelling isn't a "journey" it is a necessary step on the way to the endgame.
Your solution: Find a guild. Queue up in the dungeon finder and talk to people. There a million different discord and in-game communities.
There is plenty of social interaction around the game of WoW. You just have to put in a minimum of effort yourself.