anyone here a plumber?

yeah man if someone can come lend a hand that would be great, i cant seem to find the vent pipe out in the front by the street, and i tried opening up the “clean-out” but the clog is after that, and there are two 90* bends between the cleanout and the problem area. plus i dont fully understand how to use a snake cause i cant seem to get one more than a foot or two into the piping with those bends and crap. i just suck. i called my dad last night and he gave me all kinds of pointers on how to try and fix it and nothing has worked. god dam i really cant afford a plumber and dont want to deal with my cheap ass landlord who is just going to come and try to do it himself.