I was staying the night at my uncles and his house is newer. Him and his daughter are the only one that has lived in it. When I was sleeping in my cousins room upstairs, I woke up and I swear I saw a older man standing next to the bed looking at me. At first I thought it was my uncle, but then realized it wasn't. I immediately sat up, grabbed my phone, and shined the light around the room and of course nothing was there.. I turned on the lamp next to her bed and eventually fell back asleep. About two hours later I woke up again and looked towards the door which was halfway open. I saw a two little kids. One was peaking his head around the corner just looking at me and the other was wearing blue pajamas but I couldn't see a face. I thought it was my cousin but when I looked next to me she was there. And when I looked back. They were gone..
I never wake up in the middle of the night for no reason. No one believes what I saw but I could swear on everything that I saw them. They say I was dreaming. But after I saw the man and fell back asleep I was dreaming about something completely different and nothing about kids or ghosts. Later I found out from my brother that my cousin hears 'crying' noises at night.. and I think how coincidental is that..
Please tell me that I'm not going crazy haha.

I can't actually confirm whether you saw ghosts, but if you were truly totally awake, you might have encountered something paranormal.

Some newer homes exhibit paranormal activity due to their being built on burial sites or war areas.

If you see them again, why not try to talk to them and let them know that you see them and aren't there to hurt them.

I think most people that have paranormal occurrences in their life get some strife from others that don't see it and don't believe it. Don't let that bother you.