Defect diagnosis starter

Hya, there’s another question about my blue caravan. Since it’s so cold, the starter always needs 20, 30 runs until it turns. When the end key is turned, a loud ‘crack’ always comes, but he doesn’t care and doesn’t turn. At some point – and when the engine is warm, it always works again and again until the next morning. The thing is supposed to be built out. If someone has a tip like I can still save it until it’s not quite that cold anymore, so that I can take death without me over the pit? Thx Mathias