What to do to improve wet clay soil?

Question

We get heavy rain at times which covers the grass and drains very slowly.

Answer 1

Here are a couple of articles for you.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm
https://www.gardeningknowhow.com/special/organic/how-to-easily-improve-your-clay-soil.htm