Help me get my canadian citizenship

My name is Mathiw Dupuis Zuñiga.My dad was a proud canadian but sadly he passed away, he would always talk about canada and the rest of our family up there but sadly he didnt had the opportunity to take us, im from costa rica by the way, this money will be use for all the lawyers and paperwork needed for me to get the citizenship. This will not only help me it will hel the rest of my family especially my brother, he is my half younger brother, his mother abandon him and my dad, im hoping that if i get my canadian ciitizenship i can claim him or sponsor him so he can become canadian too, so we can have a god future and help the rest of our family.