“瞎猜的”可不是“blind guess”

a shot in the dark 瞎猜，亂猜

an attempt to guess something without having any facts or definite ideas = make a wild guess

My answer↗ to the last question / was a complete shot in the dark. ↘

我最後一道題的答案完全是蒙的。

give sth. your best shot 對某事儘自己最大的努力

to make as much effort as you can to achieve something difficult

This case is going to be tough, but I promise↗/ I’ll give it my best shot. ↘

這個案子會很棘手，但我保證會盡力而為。

have a shot at (doing) sth. 嘗試（做）某事

If you have a shot at something, you attempt to do it.

A: "Do you want to try driving my car, to see how you like it? ↗"

B: "Yeah, sure, I'll have a shot at it." ↘

A：“你想不想試一下我的車，看看你喜不喜歡？”

B：“好的，一定，我會試一試的。”