If you are applying from UAE and are a citizen of one of the third world countries, I hate to break it to you your chances are already reduced to zero especially considering you are a mature adult. There is a chance only if you are younger and are pursuing studies from a well-reputed public university and spending top dollars or have got a scholarship. Any agent claiming otherwise is lying to you. You can use the search filter with UAE for more details. You must consider applying from home country when possible. Also applying with the whole family is a red flag to them. Most people usually get their study permit and then just apply for them separately.