Don’t be worried about it at all if you don’t have a girlfriend. It is more than OK and highly socially acceptable in this day and age, in 2021.
It’s only something to be concerned about if you are battling to get a girlfriend. You badly want one, and yet you continually are rejected.
Then there are possible reasons why this is so and certainly something you can address. But if you are happy with it, well, you are part of a growing number of people that prefer to stay single.