As mentioned already by other tsikoteers here, the best way to get infected by covid is by removing your facemask and inhaling those covid infested air, and by touching your face (e.g. poking your nose, rubbing your eyes) with unsanitized hands.
Kissing your partner is also a good way to get covid if in case your partner happens to be asymptomatic.
Science Brief: SARS-CoV-2 and Surface (Fomite) Transmission for Indoor Community Environments | CDC
The principal mode by which people are infected with SARS-CoV-2 (the virus that causes COVID-19) is through exposure to respiratory droplets carrying infectious virus. It is possible for people to be infected through contact with contaminated surfaces or objects (fomites), but the risk is generally considered to be low.
