Take your dog for regular walks and dont leave it couped up in the garden.
Utter nonsense.
Dogs wee all the time. It’s not about needing to empty their bladders, it’s territory marking. Dogs want to wee in their own gardens.
Right. Girl dogs seem to create the problem more than boy dogs but that’s because they’re more precise, boys splatter, girls pool. You can dilute the wee with a watering can if you’re there or you can encourage the dog to wee in certain areas. The best way to do this is fence off the lawn you want to keep nice, really.
You can get get special seed and food that makes grass grow better where the wee has damaged it, this is what we do.