You're getting it wrong, try getting in touch with actual teachers to get advice on how to start teaching, and talk to older students that can tell you where the good professors are and attend to their classes instead.
>in order to be a teacher it's necessary 3 or 5 years of experience as a teacher
You start as a sidekick teacher, I think it's called "ayudante de cátedra", you can do that with just good grades and being in touch with teachers. They might even get in touch with you. Friends of mine were offered teaching positions in a highschool because they were doing good in their first year in college. I'm talking about community college in another LatAm country. In exact sciences careers here they give you an intermediate title when you're halfway through third year, that title can grant you teacher position. Do you have something like that in your college?
In the meantime you can give particular classes to highschool students and you can bring that up as experience if you are interviewed for an ayudante position.
For the institutional problems like the internet connection, bring your complains up through some student organisation. They usually know a lot about how the place works and are happy to help. Just find one that's not in bed with the dean or stuff like that.
I think you have two ways to go, if you like solid advice you can do as the other anon said and >fuarrrk their way mang
if you think the place is too focused on engineering and research has no place. You wouldn't be helping yourself/other students that way.
But what I think you're missing is that in college you have to be involved with people if you want to have a good time during those years (and afterwards if you do research). You don't sit down and do what you're told like it's highschool, instead you must be in touch with the younger professors (they're usually cool people, unlike the ones who've been there for 40 years), frequent student groups and ask questions, study with other people instead of asking the prof, go play futbol with older students (aka the youngest teachers), immerse yourself in. Otherwise you won't get to do interesting research as a job if you only follow instructions. I know you're not 18 but you sound like you don't grok that. Good luck.