I love raids, they are a clever blend of spatial and mathematical puzzle, mixed with the randomness of the board.
If better team meant you won every time it would be so dull.
Have you read the Ultimate Raid Guide in the player guide section? It can really reboot your strategy, even if you’ve been playing a while.
https://forum.smallgiantgames.com/t/ultimate-raid-strategy-tips-for-the-casual-player/29070/26
For a light-hearted take on the frustrations of boards, have a look at this:
https://forum.smallgiantgames.com/t/the-ballad-of-the-bad-board/29799