If it’s too high for your liking, reroll.
If you are successful in a string of raids, you are more likely to be offered higher ranked opponents who have got a similar number of cups.
You can still find weaker teams, but you have to reroll more because fewer weaker teams will have accumulated that many cups.
The cups system has some flaws but it’s what we’ve got to work with.
So you’ll tend to bounce up and down. As your team improve, your natural position will rise.
Good luck with it. If it gets demoralising, check out the raid guide in the player guide section.
https://forum.smallgiantgames.com/t/ultimate-raid-strategy-tips-for-the-casual-player/29070/24