On desktop I am using Linux myself.
My Phone with GrapheneOS is primarily a communication and navigation device.
When I am out of the house I also use it occasional to look stuff up on the internet or use it to ID plants.
I also do all my online banking on my Phone due to the security Graphene provides.
I really appreciate that GrapheneOS just fades into the background when using the phone. No nagging notifications to use the phone more, no preinstalled bloatware like social media apps
Most of the time my phone is on my desk and is quiet it only notifies me if a messages arrived or if it needs charging