It may depend on your hardware. If it wasn’t made to support Free software it likely doesn’t — particularly for firmware for WiFi cards or Nvidia graphics, which PureOS should not have packages for.
Would appreciate an explanation from whoever was downvoting you before.
There are no laptops in the market which support free firmware for WiFi, except those from Purism. So PureOS (without installing additional non-free software) will not work for you.
Yes, there are indeed RYF-certified laptops supporting free WiFi firmware, but they are now vulnerable to Spectre, Meltdown etc, and not fixable. So unfortunately this is not very secure to use them...
I recall running into issues with WiFi firmware from Purism. I installed the prop. driver and got some improvement. Although, I ended up upgrading the wifi chip altogether in the end.
No problem. I’d recommend trying it out live, you can get it at https://www.pureos.net/download/ and then follow the installation instructions (https://tracker.pureos.net/w/installation_guide/live_system_...) from there if it works well (make sure to copy your /home directory/partition first if you want to keep it), or not install (and maybe try purifying Ubuntu or Debian a bit with the `vrms` package’s assistance) if it doesn’t.
Would appreciate an explanation from whoever was downvoting you before.