How can i center site header in nav with random width of suff around?

What i want is almost same as this programs header,

The Title is completely centered despite of the random width of the aside stuff. Yeah If course i am not making a software but still i want almost this kind of random stuff around AND Still The TITLE MUST BE NEATLY CENTERED

Please, Don't give me advice like 'Just use grid/flex'
Instead, Tell me how am i gonna use the grid/flex to center it ?? (I am trying and ,,, still Cant solve it.)