Hell everyone!

I recently started wow classic. The OG version not lich king. (Night elf hunter of course) is it even possible to play this game alone? I find it very difficult to complete quests and stuff. Takes about an hour of fighting one enemy at a time. Which I don’t really mind. It’s pretty immersive for me really. I picked a low population server on purpose so I wouldn’t run into other players. Haven’t seen one yet. Also there doesn’t seem to be anything in the auction house. I’m having a great time really. Just level 12 after about 20 hours lol. But my question is. Will there be a point where I just won’t be able to progress any further alone? And I’ll be stuck?