I know how Google Translate translates this, but wondering how those who actually use Mandarin/Chinese would say it.
Thank you very much in advance.
There is a difference in knowing the path and walking the path
The idiom 知易行難 (knowing how to do something is easy; put it into action is hard) match this quote quite well
知 - know; aware
易 - easy
行 - implement; walk
難 - difficult
The writer might know this idiom but thought 行 meant walk
To put this idiom into quote:
To translate the quote from Matrix directly, you can say "知道路怎麼走和真的去走這條路是有分別的" (There is a difference between knowing the path and really walking the path)
popular way is "说起来容易做起来难".
The elegant way to say it is "说時容易做時难", which is a common expression
Chinese versions of some quotes at https://zh.wikiquote.org/zh-cn/%E9%A7%AD%E5%AE%A2%E4%BB%BB%E5%8B%99 https://www.juzimi.com/article/%E9%BB%91%E5%AE%A2%E5%B8%9D%E5%9B%BD many w/o original, there find 明白一件事和做这件事是不同的 which sounds like a possible translation
When people say "There is a difference in knowing the path and walking the path", they usually means "Do something is much harder than know something".
Based on your context, the formal way is "知易行难", but the popular way is "说起来容易做起来难".
One step further, "知行" is the core theory of a school in Ming, ref. 知行合一.
Probably, 眼高手低 denotes the same sense. It describes that one possesses good knowledge or vision, but can't achieve much practically.
More closely, it can be 理论和实践是不同的.