Yep Gitea supports LDAP authentication out of the box. People often self-host Gitea but now there are a bunch of hosted-for-you gitea options like Digital Ocean

Yep Gitea supports LDAP authentication out of the box. People often self-host Gitea but now there are a bunch of hosted-for-you gitea options like Digital Ocean, Cloudron, Stellarhosted and https://hostedgitea.com https://hostedgitea.com (disclaimer: I built hostedgitea.com).