There are better CDNs for image proxies, Stackpath is way nicer than Cloudflare for image hosting and cheap. Plus you don’t have to let them MitM your pages and endpoints.
Stackpath is an excellent alternative. I use stackpath (moved from incapsula after they got bought out) though I still use cloudflare for some areas. Stackpath support is much better than cloudflare in that I can always contact someone and get a response quickly even over live chat so for support stack path wins - really both tend to just work. I prefer stackpath waf over cloudflare. Only network issues I found is there were issues accessing from China which newer not issues on cloudflare. Pricing for cloudflare is flat which for the business and pro plans, and I really like flat fees instead of usage based . where stackpath varies each month based on usage.