No reverse or feature to change the video playing speed in there unfortunately.
The closest you got is the seek function.
You can see if you can see if you can add it via html with playbackRate coming from that, or see if you can add a node package that will give you the additional functions for your videos on your site.
However, it will be interesting to see if anybody has as you can’t access the DOM through Wix, so not certain that this can actually be done.
Thanks for that bit of info, I would definitely go down the Vimeo own API route if I had to use something like that, although having to pay for pro is a bit of a bummer, wouldn’t be too bad if it could just be done with the plus version as well.