Cookie Failure

I love to cook but im not soo good at baking yet i will try.I was watching Food Network the other day and the chick was baking chocolate cookies i didnt listen to what she put but i thought it was just instead of putting the chocolate chips u melt them and just add at it. I saw her do that and the cookies looked good. So i told myself ima do that soon. So i took the recipe of chocolate chips cookies and i just melted the chocolate chips and added to the mixture. The mixture looked fine so i put them on the baking sheet and into the oven. Within a few minutes the cookies where going flat im like "nooo". When they were done they looked bad, i thought maybe they taste good. I tasted them and they were too sweet. I ended up throwing them away. None of my family members tasted them either so i just dumped them. Ive lost my confidence on baking cookies so ima take a break on that.