How does anyone start out with establishing an online identity these days when so many usernames are already in use?

I have a very common name and periodically look for a new username I can use across platforms. I chose meandering for because I already had a relevant domain name but don’t want to use it elsewhere.

Generally it becomes all too hard and I give up. However, last night I might have stumbled across something but will wait a few days and see if I still like it.