I mainly do 2 things to validate my project:
1. find relevant threads on reddit or other communities. If people are asking the same question again and again, it's a good signal.
2. find if any products exist to solve the problem. If there are a few of them, try to guesstimate the market size. Mostly likely, there is a market for that if the number is ok. If there are many existing players, there is no need to validate because obviously there are many competitors in the field.
2. find if any products exist to solve the problem. If there are a few of them, try to guesstimate the market size. Mostly likely, there is a market for that if the number is ok. If there are many existing players, there is no need to validate because obviously there are many competitors in the field.