There exist longer answers for building a successful consultancy, but in the short term, you just identify companies which do Android/Lua work, identify people

There exist longer answers for building a successful consultancy, but in the short term, you just identify companies which do Android/Lua work, identify people who probably have hiring authority at them, and say "I notice that you do Android games. As it happens, so do I, and I am looking for work. Do you have 15 minutes free next Monday to talk about this?" Websites are not where contract work exists any more than they are where source code exists. The wee little sample of both those fields which show up on the public Internet are a) tiny and b) disproportionately crappy. It is against the interest of engineers for us to think these are the totality of the market just because interacting with them is easy and doesn't require getting outside our comfort zones.