Looking for cheap tyres

I am twenty-one years old and despite my age, I just managed to pass my driving license exam a couple of days ago. What is more, I immediately bought a car. It obviously is not a new car. It is a secondhand car, however, I instantly felt in love with it. Unfortunately, my life can be a real mess and I hate that. What I mean by this is the fact that I am cursed with some kind of bad luck. I know that there are people who do not believe in bad luck but I am one of those who do believe in it. In fact, I am a victim of it. Weird stuff happen in my life and this stuff is not necessarily something that I like. For example, when I was driving my car yesterday, my tire simply exploded. Do not ask me why, I have no clue why it happened. When I went to a tyre repair shop they said that they had no clue why this had happened as well. Anyway, now I have to look for cheap tyres and I do not really know where to find them. When I asked about them in this tyre repair shop they wanted me to pay extraordinarily high amounts of money for one tyre. In my opinion they lost their minds if they thought I would ever pay such amounts of money for a tyre. Nevertheless, I still need to buy cheap tyres because I cannot drive my car right now, which makes me pretty sad because I love to do it.