Why didn't the Philippines have landing visa?

Why didn't the Philippines have landing visa?

A: there is a visa on arrival in the Philippines, but it was canceled because of the outbreak two years ago, and it has not been reopened so far. Although the Philippines has now liberalized entry and exit conditions, visa on arrival has not been restored. A few days ago, there was news that landing visa would be opened, but so far the official has not officially announced the opening of landing visa. Therefore, if you want to enter the Philippines now, you can only enter the Philippines by applying for a travel visa, business visa or other visa.