Do you have professional looking photos on your profile? Spending time on improving the text part of your profile is pointless if you have amateurish looking photos.
Once you've sorted out the photos, it's fine if you say that you've never had a girlfriend - IF you spin it in the right way and IF the sort of woman that you want is the sort that would be attracted to someone that had never had a girlfriend.
It's fine if your profile is polarising, so that many women would have no interest in you. As long as the sort of women that wouldn't be interested are the sort that you wouldn't be interested in. And as long as a proportion of the women that you're interested in, would be attracted by what they see and read in your profile.
If no other man is admitting to zero previous relationships on that dating site, that's great, as you'll be standing out from the crowd.
Don't say it as "I've never had a girlfriend"
You could say it as "You have the opportunity to meet a man that is a completely clean slate."
Or "You have the opportunity to meet a man that is a completely clean slate, with no baggage."
Or "If I were a car, I'd be brand new. I'm not going to say what make and model I'd be. As whatever I said, you'd think I was bragging or being virtue signalling humble."
Or some other variation of that where you assert one or more of the positives of you never having had a girlfriend - from the point of view of your target audience.
Spin your interests in a similar way.
For example don't say "I like playing video games." Say "I enjoy creating video game related social media content" (and make it true that you do - even if it's just you streaming you playing or creating youtube videos of your gaming).
Having said all that, there's probably ways you could write a great profile for you that doesn't go anywhere near your lack of previous girlfriends.
And what do you really want? Do you want to settle down with and marry the first woman that you date? Or would you prefer to get involved with a few women, so that you can learn how to be a good partner and how to select women and then settle down?
Don't worry about the stud reputation thing, or the lack of a stud reputation. Most of what you think you know about dating is incorrect. Keep an open mind. Learning about how to get good at dating and relationships is an enjoyable process - when you approach it with the right frame of mind. One of positivity and enthusiasm and not taking setbacks seriously.
Your perfect woman may well be someone that thought that she wanted an experienced man, until she met you.