The structure 还…呢，能…就不错了
The structure 还…呢，能…就不错了 
indicates that an action cannot be performed.
In the first part of a sentence, we should state an action that cannot be performed. In the second part of a sentence, we should state an action that can be performed, but it doesn't fully meet a person's needs.
indicates that an action cannot be performed.
In the first part of a sentence, we should state an action that cannot be performed. In the second part of a sentence, we should state an action that can be performed, but it doesn't fully meet a person's needs.Scheme
还
impossible action
呢
能
possible action
就不错了
Examples
还出国旅行呢，能在国内转转就不错了
Since we can't travel abroad, it would be nice to at least travel around our country
hái chūguó lǚxíng ne, néng zài guónèi zhuǎnzhuǎn jiù búcuò le
买这件衬衫的人太多了，还买三件呢，能买一件就不错了
There are so many people who want to buy these shirts. Although we won't be able to buy three shirts, it would be nice to buy at least one shirt
mǎi zhè jiàn chènshān de rén tài duō le, hái mǎi sān jiàn ne, néng mǎi yí jiàn jiù búcuò le
她跑得太快了，还超过她呢，能跟上她就不错了
She runs very fast. I won't be able to overtake her, but it would be nice to at least catch up with her
tā pǎo de tài kuài le, hái chāoguò tā ne, néng gēn shàng tā jiù búcuò le