Convert MP4 to MKV

I am looking to download MP4 videos from Facebook and then convert them to MKV format using Premiere Pro with loosing quality. I have heard that Premiere Pro is a powerful video editing software that can handle a wide range of file formats, but I am not sure if it can be used for this specific task.

Has anyone tried converting MP4 videos to MKV using Premiere Pro? If so, can you please share your experience and any tips or tricks that might be helpful?

Thank you in advance for your help and advice!