At what age is it considered to be a red flag for someone to go on their first ever date? Like is it a red flag for someone at 50 to go on their first ever date with someone? If so at 50, then what about 49 and so on?

I (30M) have never been on a date with someone before due to various reasons. I’m in the belief that I will go on my first ever date when I become 60 years old. So I gotta wait another 30 years. However they say that the older you get with never being on a date before, the bigger red flag it becomes. So I was wondering at what age does that red flag start? Does it start at 30 and only gets bigger from there? Or does it start at 50?