Brown patches on the lawn

Like many people, we bought a puppy during lockdown after wanting a dog for such a long time. When he was young he used to potty on the patio, which was easy to hose down afterwards, now he uses the lawn and unfortunately we have brown patches as a result.

Does anybody have any advice on how we get him to potty in a different location (not on the lawn), how we deal with the brown patches and what products you have tried that really do work - dog rocks, Lawn Rescue, Pee Fix, Get Off Gel Crystals and Green Peez, to name just a few.