...and that's OK, we all do that. But there's a problem.
But once you've hit the search button, you have to turn on your critical brain.
As an example, here are some websites students often use for costume history, but are not, on closer inspection, authoritative.
These appear to be Content Farms: the info here seems to be OK, but not of really high quality. These sites are built to get you to click on ads for profit. Avoid.
But keep looking, there are many really good costume history sites to be found.