What are some key features and differences between the 2021 and 2022 Audi A4 models?

I am debating between purchasing a 2021 or 2022 Audi A4, but I am having trouble understanding the specific improvements and changes between the two models. Can someone provide some insights?

For the 2022 model year, the Audi A4 has received a refresh which includes a redesigned front grille, updated exterior styling, and a new infotainment system. These changes help distinguish the 2022 model from the previous year and make it a more modern and attractive option.