Depends on the vote. For example see the yearly "The US Blockade is illegal and immoral and should stop immediately" UN vote. Pretty much always just US and Israel. And lately Ukraine.

Edit: and one or two heavily US aligned tiny Island nations sometimes e.g. Marshall Islands

Abstaining and even voting yes on the matter simply because they know for certain that the usa will vote no, allowing them to save face. Plenty of non western countries practice that as well