Need some feedback on my harmony, please :)

[chilly nymph]

I've been learning how to do harmonies, so I tried to do a little snippet cover of Tonight You Belong To Me. I sent it to my friends for some feedback, and they said that it sounded bad. So, I need someone to please help me make it sound better. Thank you!

[little ledge]

If i had to guess, they probably said it sounded bad because its a incommon harmony/chord

its almost like a dissonant chord and most people dont like they