How long will I need Braces and Can Braces Fix my Sliding Jaw and Overbite? (photos)

My jaw like slides forward and to the right when I speak and I have a bad Overbite because I Sucked my thumb due to anxiety as a kid. I can't afford braces, Well my family cant, Trust me I've asked. But I really need them and I'm very insecure about it. Any help? Thank you!! :D

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