I managed to be able to successfully import components from the PCF library by downloading either the managed or unmanaged version as a ZIP file fro, Github and them importing them in my PowerApps Solution space as a new solution. I also "ran" the solution for checking.

However, in my canvas apps I am unable to actually use them because i dont have a "Get more components" options in the "Insert tab":

In this microsoft documentation it said you need to activate the "Power Apps Component Framework for Canvas Apps" setting (https://learn.microsoft.com/en-us/power-apps/developer/component-framework/component-framework-for-canvas-apps), which I did, but there is still no option in the canvas app interface to import/use the PCF library component. I'm assuming by now that this was for something else. What am I missing? How can I use the PCF Library components in my canvas app, after successfully importing them into the solution space?