Where can I find a good library or collection of Adobe After Effects Expressions?

I’m creating a video for work and need a good expression to get a bounce effect for text that flights across screen and then comes to a stop. I found one but it is only so-so.

I’m looking for a library of expressions because there are other effects I may need- I’m not quite sure what direction I’m going to take the video in and would like to experiment with different expressions I might be able to get my hands on :)