You might prefer unpacking your RAR files not directly on your Mac, but online. There are a number of tools available for you to use. We’ve tried ezyZip and Archive Extractor Online. Both can extract multiple RAR files that you drag and drop from your Mac.
With online tools though, you have to be cautious about their safety as well as your data. We’ve checked both these tools in Google Safe Browsing site status checker and as of December 17, 2021, both returned the green No unsafe content found results.