One thing about UEFA Champions League, is that the league is open for every teams to participate in playing the competition, so for any teams to be among the UEFA Champions League, it depends on what each team end with in the previous seasons in their leagues and that is why most teams fight to fall among the big 4 in every league across the countries  so that can be allowed to participate in the UEFA Champions League, and this coming season of the UEFA Champions League 2025/26 Season, the teams that are qualified to play the competition knows their selfs and once the league starts, they will surely line up to the game.