Hi there,
What you are asking is a research question, not a specific R-related one. It is impossible for us to know what you want by such a short description, and this forum might not be the right place for that.
I suggest you read up on time series analysis and the various methods that exist, then try and apply them to the data you are working with. If then you run into a specific issue, you can post again with a reprex (minimal code and data to reproduce the issue) and we can take it from there.
Good luck!
PJ