I'm sorry if it is harsh but those covers are not listenable enough, think of it as a feedback to keep you improving! You would sound a whole lot better if you had some basic voice training, the covers sound like you are having a hard time breathing, if you don't have the time or money to take courses, you could always give youtube a go. Also make sure you are using your diaphragm to breathe through the song. I would like to see you improve!
I tried making a page for InvaderT but couldn't find much info about him, it would be a great help if someone else put the details in for me