I had those 3 settings in php.ini already to 500mb. It still didn't work. I forgot to write the error code here.
It seems i had to go into "Request Filtering" and add .sql to the allowed list.
Afterwards i had to go into the FastCGI Settings and change the Activity Timeout
After that, i uploaded the file and it worked. I got more error so i had to import the database in 3 sections.
I still would've liked to know how to import it via terminal, isn't it faster?
oh well, i guess i don't need to know anymore. Seems to be working.
thanks!