Not all ovens are created equal. It’s important to know whether you have a conventional or convection oven. Unlike conventional ovens, which cook food by surrounding it with hot air, convection ovens circulate the air, resulting in different temperature settings. I use this oven thermometer to ensure my matzah is baked at the right temp.
Find it online: https://emmafrisch.com/the-easiest-most-delicious-matzah-recipe/