First the fox breeds first

The second step is to distance the baby foxes that have been bred from their parents and other foxes

Third give gifts (such as berries or things that can be eaten except cake) and the fox that you breed will definitely not run near you and he will not be afraid when the wolf has tame

I've tried it on the bedrock edition it doesn't work I don't understand you can only tame foxes in Minecraft Java

Only this way if you want more complete search on YouTube or Google