/diy/ - Do It Yourself

I have a bathroom that got clogged. I had the brilliant idea of not using a thick cardboard roll without paper, and when I returned from work, that thing was so moist that I flushed the toilet, and supposedly it went away, but it didn't, and the water doesn't flow as fast as before.
I can't call a plumber because I've had issues with the landlord, so I have to solve it on my own. I've already tried using a hook and a plunger, but it hasn't changed anything.
I also can't afford to buy specialized tools, I barely have enough to eat.
I have some leftover baking soda, vinegar, and a coke that I haven't finished in weeks.
Would the combination of baking soda and vinegar work?
Or should I just pour the coke?
What other things can I try?