some problems with my database

Hi Aller, welcome!

We don't really have enough info to help you out. Could you be a little more specific about what your problems are? What are your importation issues? Ideally, could you ask this with a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

If you've never heard of a reprex before, you might want to start by reading this FAQ: