Any cheap Hikvision or Dahua camera will usually support ONVIF. ONVIF is the key search term, if it has that it supports the standard open protocols and it'll work with most software around. Try searching it on ebay or aliexpress. Some of these do offer their own cloud too, but it's disabled by default on all I've tried so far.

A few samples:

https://www.aliexpress.com/item/2015-New-model-DS-2CD2135F-I...

https://www.aliexpress.com/item/4MP-Dahua-H-265-IPC-HDBW4431...

Heck, even my local computer store has their own branding of a cheap camera for a quite good price:

http://www.canadacomputers.com/product_info.php?cPath=37_498...

I bought one of these recently and it seems to be a Dahua based firmware, full ONVIF support and available locally is pretty nice.