http://kycnotmezdiftahfmc34pqbpicxlnx3jbf5p7jypge7gdvduu7i6qjqd.onion/service/orangefren
There is DDoS-guard for example, which is also centralized but it’s russian (at least). However if you did not opt for the lazy option, you could implement something from neither these two. This is just because your service is not professional, you and your team don’t really know what you are really doing.