Whether crystal Palace play in the Europa League or conference league the important thing is that they will be playing in Europe which is the most important thing here let see how the case will go because it will all depends on the fate of Olympic Lyon.
But it will be difficult for palace to win a European title because it is not easy and it takes a lot of quality to win a European title and palace will have to strengthen their squad for them to achieve this
I already believed that Crystal Palace would compete in the Europa League next season, until I saw that they would no longer play. According to UEFA, they will play the Conference League next season instead of the Europa League. What matters is that they will participate in Europe next season, they are better than some top teams that can only compete in the league next season and will not make it to any European competition.
However, Crystal Palace would have qualified for the Europa League for the first time in their history, but we don't know what happens next because everything is going to be determined by Lyon chance, Crystal Palace will find it difficult to win any of the competitions they can play, until they add more players to their squad. If they can sign more players, I'm confident they will win, since we've seen clubs unfamiliar with winning a trophy make history this season.