Genuinely don’t understand what you mean here. But to uncomplicate - Bundesliga is a farmer’s league. They have had the same winner 8 years in a row, a winner which until last year, barely looked like winning the CL in that period. They haven’t had a team look like winning the Europa League in God knows how long, and any player above the age of 23/24 playing in Germany cannot consider himself a top player unless he plays for Bayern Munich. If you still play in Germany and don’t play for Bayern in your mid-twenties - you are typically a second rate footballer. At any given time, the only non-Bayern player in the whole country any United fan would want will typically be about 20 years old.
To be fair, Bayern were strong contenders for the CL title in every of those 8 seasons you mentioned with the exception of that year with Kovac when they lost to Liverpool.
Had things gone slightly different Bayern could have won each of the 2016, 2017, 2018 CL's instead on Real.
Do you remember those semi-final games against Atletico (2016) and Real (2017 & 2018). Do you remember those referee performances? Do you remember how badly Bayern dominated Real in 2018? Only to be knocked out due to freak blunders by their substitute GK and substitute RB?
I get that the Bundesliga is on average a lower level than the PL, but I don't get why you need to make things up to try prove your point.