Does it Count as Ungrateful or Bad When I Feel Like This?

I have friends, Good, Great and even Best Friends. However, I feel like having best or close friends is too tiring that I don't want to have friends at all but just people respecting me as a human. Back then, I would really like making a ton of friends or join in whenever I have the opportunity, but for the past month, talking to them feels useless and I prefer to be all alone or be left out. I mean a few months ago, I felt like I was left out by my best friends so I just let them be, but when they started talking to me again, it felt great but it still feels like nothing at all. Like it felt tiring and empty yk? What do you guys think? Is there something wrong with me from this?