Please don't be anxious and worry about it, try to keep yourself occupied with something productive.
IRCC and Canada has their own preferences and we as the applicant can only wait and this system is way more fair than rest of the world. I am not saying it isn't unfair, it is, but we have to try to think from IRCC side, each application is unique in its own perspective, so they can't take same time to process. Moreover, each IRCC agent is a different human being, will process applications as they can.
I believe most applicant's from 2020 who received PPR request they are inland and have Canadian experience or Some PNP one's from out land got PPR request.
Don't worry we all are here with you waiting patiently for almost 2 years now, hopefully next 6 months will bring some good news, besides that I don't think we can do anything else.
So chill, learn and be ready when the request will come, usually things happen when you least expect them!