Well I do know about it and it's not all that it's cracked up to be. The same teams win the big prizes unless a lightly regarded team becomes the plaything of some sportwashing oligarch or country, see Chelsea under Roman Abramovich, PSG, Manchester City. in Italy Juventus won like 10 titles in a row before their players got old. Bayern Munich in Germany is currently in the midst of their own 10 straight league titles. PSG wins in France unless they're bored. only 7 teams have ever won the premier league in England, with Leicester City's 2017 win being a shock for the ages. Before the sugar daddies came in and diversified the winner list, it was just Manchester United and Arsenal competing for the title.
Relegation is a good concept, but because the stakes are so high it's dog eat dog and the big dogs eat the most.