Hello @VS_09,
Welcome to the forum! Happy to help you if you can add some data along with your code above so I can run it locally and see the behaviour. I suggest using something like datapasta (See here: https://cran.r-project.org/web/packages/datapasta/vignettes/how-to-datapasta.html) (Have a look here too on good code to share: FAQ: How to do a minimal reproducible example ( reprex ) for beginners)