I agree with this part of your post.
> And you mean western sanctions, not Ukraine.
But not this part. Ukraine used to export a bunch of stuff that Russia has now destroyed.
Ukraine doesn’t even list on it. They produce grain the news says… about 1/3 as much wheat as Russia.
https://www.worldatlas.com/articles/top-wheat-producing-coun...
I can go on, but to put it simply Russian (and Belarus) GDP is much higher than Ukraine GDP. It’s safe to assume they produce more and strict sanctions on them will have a greater impact. Ukraine is still producing, so some of their goods are still able to come to market. That said, yes some was destroyed / impacted I’m sure — but again, far less than sanctions or the lockdowns.
How do we know they'd stop at Ukraine?
The peace for our time. - September 1938, Chamberlain