I need help with Home Assistant and Raspberry pi

I am trying to create in Home Assistant (hosted in Raspberry pi 5) some switches and indicators. The signals for those switches and indicators come from the pins of the very same Raspberry pi 5. The job consists in doing It and to teach me how to to It. The Raspberry IS ready with every important thing as Supervisor installed. It has to be accessed by TeamViewer. Anydesk doesn't work