Can I fly directly to Cambodia with my 2022 passport?

I don't think so, because China and Cambodia have not signed an agreement.

The Kingdom of Cambodia, commonly known as Cambodia and formerly known as Khmer, is located in Indochina Peninsula, bordering Thailand in the west and northwest, Laos in the northeast, Vietnam in the east and southeast, and the Gulf of Thailand (formerly known as the Gulf of Siam) in the south. Cambodia is a dish-shaped basin surrounded by mountains on three sides and a vast and rich plain in the middle, accounting for more than three quarters of the country's area. There are Mekong River and Tonle Sap Lake, the largest freshwater lake in Southeast Asia, and the capital Phnom Penh. Cambodia's population is about150,000, and Khmer people account for 80% of the total population. There are about 6,543.8+million overseas Chinese, of which about 70% are from Chaoshan, Guangdong.