Struggle to find a good username

Hi guys,

Since 1 month I struggle to find a name for my youtube channel + instagram name I want to change for the same name I'll find for Insta + my domain name.

I used all the website I can to find a good nomain nam, keywords, leandomainsearch, panabee etc And I cant choose a one.
I'll build my business on it (fitness coaching, fitness video related but not only that so I have to find a name not based on ONE subject)
I would like to use my last name but I prefer to stay anonymous and I tried to mixe letter and do something with my last name but its crap.

Any ides guys ? Some guys here sell a service of branding name ?

thanks

Try to attach ur name with ur brand name..nd alsobcheckout that there must be no tother brand with ur name...it must be unique .. Try to make ur name professional...dont use funny branding names..

Thanks for your reply mate.
Actually this is what a I do and the idea of the last name is professional BUT my last name is not memorable, it isnt spelling easily and I want to conserv my anonimity without put a last name that I cant identify myself with.
So I tried to mix the letters and tried to do something with it but its crap.

I lost time because I have all the gear to start my channel and the website is already builded but I dont have the NAME !!!