from the video, I got the impression that cloudflare has a pretty standard 3 month ramp up period which, for her, ended right about thanksgiving. so it's not 5 months with no sales, it's a little over a month. and that month has two (three) major holidays that knock out ~2 weeks. so 5 months is suddenly more like ~3 weeks.
and, if every 1:1 with a manager has been glowing and then you get fired 'for performance', there's been a massive failure somewhere.