frs walkie talkie

I am trying to find some FRS radios for team orientation. I will be needing to buy about 6-8 radios in bulk and am not looking to spend a lot of money. I have seen some Onn Branded radios at Walmart but that's about all I've found for cheap and bulk. I am looking to buy fully legal radios (no...

Over the last few years, I've been hearing digital mode on FRS in Southern Ontario. Specifically, FRS 1 when in Toronto/Mississauga. It seems to always hog the channel. What might this be and is it even legal for someone to do this? Here is what's going on: https://files.catbox.moe/tlamrz.mp4

I've found out how to scan and listen to all FRS walkie talkie communications in my surrounding area, but I cannot talk back to them. If this is possible, any assistance you can lend me would be awesome. Thank you all.