Coaster challenges - often impossible?

Hi all, level 72 here.

More of a mini rant than anything but I've only in the last 3 weeks decided I need to start to get into coaster challenges. However, last week and this week it seems they have been impossible for me. I maxed out my dive upgrades but didn't have enough cards to upgrade enough to reduce nausea, and this week it seems I need an inclined loop card that I don't have and therefore there's no point in even starting it. Obviously there's a very slim chance I'll get it during the week but basically rules out a potentially interesting part of the game before I've even started.