WordPress exceeding db limits

https://onstage-flake.000webhostapp.com
i have simple site on above link, when i click on 20x pages to update them, i surprisingly reach 5000 queries WOW, and when i try to go to any page i see


i think hosting should prevent this from happening, because after 1h i can’t reach any url on site except home page, please advise what should i do