A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hello Larek,
AFAIK, there is no default option to copy the item as a duplicate item in the Microsoft Lists or SharePoint Online List. However, you can do it via the following steps:
Open the Microsoft List> Edit in Grid View> Copy the complete item> Add New item> Ctrl + V in the new item> Exit Grid View
Regarding Recurring items, I believe it should be possible by custom Power Automate flow, so I request you post your requirement in the Microsoft Power Automate Community - Power Platform Community to get more detailed information from the experts.
Best Regards,
Chitrahaas