How can there be brown spots on the philodendron brasil?

My mom has this plant, and I asked her why the leaves have brown spots. It turns out that your plant has spots because you're not watering it properly—either too much or not enough😕
But my mom said several other things, like sunlight, low humidity, and even stress, also affect plants.

Those leaves are a little brown? It might be because it's getting too much sunlight. Can you check and see if what I said is right? If so, you can move this plant to a spot where it's not in the light as much. Try cutting off the brown parts gently.

Hey, why not check the roots? Or, if you're feeling adventurous, why not try repotting? Do you think the roots might be rotting? If they are, it might be because you're watering them too much. If not, there might be another reason. It could also be a sign of pest problems. Do you see any signs of pest rings? If you do find a pest ring, be sure to use anti-pests often when the problem of brown leaves occurs.