I know this is probably not what you want to hear, but when you travel it is so so so important to have quality luggage and bags. Not only for the sake of convenience but also the sake of the security of your belongings. And although it might seem a bit inconvenient at the time to splash out on a suitcase, trust me you won't regret it.
In the last year I have gone through 3 carry-on suitcases, all of which have broken in one way or another due to poor quality wheels, handles or construction. Recently I received the Check Black carry on luggage from Jett Black, and I'll tell you what I was super excited to finally get my hands on a well made, beautifully designed case.