The pinout is not symmetrical. If you attempt to install the CPU with the triangle misaligned, the pins will not match the holes. Even a slight misalignment can bend pins, rendering the CPU useless.
Before you begin, ensure you are working in a static-safe environment. Ground yourself by touching a metal object before handling components. am4 pinout diagram install
Before you touch the hardware, you must understand the map of the 1331 pins. Technically, AM4 has 1331 pin positions (though some are "dummy" or reserved). The pinout is not symmetrical