Laptop Lap Desk for Bed & Couch, Portable Laptop Lap Pad with Retractable Left/Right Mouse Pad, Stable & Comfortable Lap Tray for Sofa, Travel, Writing & Home Office

Everyone else here is correct, you're looking for a trackball. However, don't use your laptop on a pillow. Get a lap desk or something with a hard surface. A pillow will block the air vents and destroy your laptop. Something like this. https://www.amazon.com/dp/B09KTQ98CR?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1