Ahoy Yunus
The net is already very durable and stretchy. Our cats, which weigh about 4 kg, hang on the net from time to time without it tearing or wearing out. I could imagine it being sufficient for a "small" football goal. However, in my opinion, it doesn't necessarily depend on the size of the goal, but how hard it is shot at :-D. However, it could be sufficient as a net for a children's football goal.
Otherwise, there is of course the ready-made solution, which is usually not much more expensive. The nets used there are certainly more stable and therefore designed for this purpose:
https://www.galaxus.ch/de...
Greetings Kodama