You can use biblioshiny for bibliometrix to import and export your Data into RData files, Excel or other format. Biblioshiny provide a web interface for noncoders.

http://www.cultureplex.ca/wp-content/uploads/2018/01/1-s2.0-S1751157717300500-main.pdf

https://cran.r-project.org/web/packages/bibliometrix/vignettes/bibliometrix-vignette.html

https://cran.r-project.org/web/packages/bibliometrix/bibliometrix.pdf

In order to be able to download files from Web of Science or Scopus, you need to have access. Once you have downloaded and converted such a file, just read it into R. In attachment an R script for how to read 'joi.txt' into R and then analyze it with" bibliomatrix".

From Web of Science of Scopus, I download file in text or BibTeX format. However, I want to remove some articles before uploading to R.

Just edit the text file (e.g. in WordPad) or BibTeX file (it is possible to use BibTeX outside of a LaTeX-Environment, namely MS Word using the tool Bibshare. See the collection of BibTex Links :

http://www.bibtex.org/Links/ )

Afterwards enter the edited file in R.

Thanks, Joe. I will try this.

Do you prefer to use any particular Bibliometric software?

To be honest, today was the first day I heard about it. Yet it seems very 'fancy'.

I learned LaTex years ago, but I forgot most of it. You could also use "Bibtex4Word" to edit BibTeX files in MS Word, but it is not evident ...see: https://interfacegroup.ch/how-can-i-use-my-bibtex-library-in-ms-word/