Please tell me if I can create recurring tasks?
For example, so that the task appears every Monday, Tuesday, etc.?

Hello, 

There is a feature request for recurring tasks: https://community.openproject.org/projects/openproject/work_packages/29120/activity
I have left a vote for you. 

Here is our roadmap: https://www.openproject.org/community-edition/#roadmap

Best regards
Samantha