Google console results?
Also dead wrong about challenge traffic like you have setup, i got that many rules similar, many here do since botfight mode is useless dude, again if this was a issue we would all be getting deindexed hence i doubt Cloudflare is to blame soley for your current issue. I also cannot see legit crawlers being blocked from my logs amd my site get over 20 million crawls per 90 days.
Post your google console logs, no point dismissing until you do some actual investigation into google even if some google i.ps have issues, it takes google ages to deindex a site unless it was a manual penalty or an algo update which if you follow seo you know every few days google is adjusting like a mad scientist these days making life miserable for most whitehat websites.
The google console page index section should have all your posts as 403 and the google console googlebot crawler stats section should reflect this.