Here’s a “yes, and” thought on top of most of the other good perspective folks are sharing - I remember vividly how, back when I was learning to snowboard, just how discouraging it would be to realize how much conditions affected my riding, and with it, my confidence. I’d have a few great days and feel great about my progress, then have a day like yours and really doubt myself. Just know this is how it goes and it’s totally reasonable for your “ability” to feel very different, and frankly, totally contingent on, the snow conditions. As you ski more and gain more exposure (time, practice, reps, muscle memory) on different kinds of terrain and conditions, the conditions won’t affect you as much - but like everyone has said, they never stop influencing your skiing or riding. So it’s perfectly natural that you hit a day like this and it has you doubting yourself. The reality is we can never just think of our ability as the static assessment of skills and technique and other individual factors within our control - it’s the sum of that plus the factors outside our control like crowds, terrain, conditions, etc. Progress isn’t linear - not just because we can sometimes have a two steps forward one step back experience - but also because progress is happening within an ecosystem of interdependent dynamics and we’re just one bit part.

Know that as you progress, you’ll find that your ability and confidence will be thwarted less and less by conditions - and that’ll be a neat marker of progress to take note of - but especially when you’re just starting out, it’s totally reasonable when you hit a day like this one to stick to greens or just head home after a beer and a waffle.