How do you research a stock?

I basically get a summary from ChatGPT about history and what’s in the news. Then I look at motley fool to see insider trades and institutional ownership. I’m new to this so the financials, key metrics, overview and multiples only make a little sense to me as of yet. I’ve heard to research a stock for a full day. I’m researching but I’d like to know how an experienced trader/ investor does this