I don't get the struggles? I can swap out a filter in 15 minutes, including the time to jack it up and remove the Jubliee clamp
As with the electrical connectors in the engine bay that have the rubber weather seals, they exert a force on the connector that needs to be unloaded before attempting to disconnect them, which is just a simple case of pushing the plug hard up against whatever it's connected to, and then pushing the tab in with your finger, and off it comes. The amount of times I see destroyed plugs from people levering them off with screwdrivers
Same applies to the fuel filter. It's not residual fuel pressure preventing them from coming off, just push the bundy fitting hard towards the filter to unload the O ring tension, then press in the tab and off it comes. I've done it several times with just my finger nail, screwdrivers not required
Removing the petrol cap doesn't do anything as the in-tank pump has a non-return valve to maintain pressure for hot starting.