Should i quit?

I’m 22 years old I’ve worked in car sales for three months now. I work for the biggest used-car dealership in my country and I feel like quitting because I genuinely don’t like it. I love cars but this is my first job in sales and I feel like it’s starting to drain me mentally.

In the beginning it was really hard because I wasn’t selling. Now I sell at least one car almost every day that I’m working but I’m starting to really not like it, more and more for everyday.

Only reason I lowkey wanna stay is because of the money as some of my colleagues make around 10k € on a good month.

I have another job lined up (which is my old job that i loved and worked at for 2 years) but I can’t get as much money from that job… what should i do?