Pain down the sides of the toes is reasonably common and almost always gets called “ingrown” when many cases are not really ingrown toenails. A true “ingrown nail” is when the nail has actually grown into the skin, pierces the skin and can become quite uncomfortable and is usually inflammation-prone. https://podiatryfaq.com/knowledge-base/the-side-of-the-toenail-hurts-but-its-not-ingrown/