Cleaning textile combi

Hello together, how do you clean your textile combi? I have a two-parter and the jacket looks pretty bad. Insects and co. have left their leftovers and the white is also not white anymore. I have read on the internet, if you wash the textile combi with the washing machine, the water protection is completely lost and with a corresponding spray you would not get it as it was. Now I thought about the jacket with a brush and cleaning mitt to clean up, but will it really be clean? I’m happy about your reviews. Allen a nice Friday & DLzG