By improving the quality of your shots to be lower and more difficult to lob, primarily using slice and managing shot speed. When facing frequent lobs, adjust court positioning by moving slightly back from the net, utilize the bandeja more, and consider the bajada to change the dynamic of the rally and attack the net player.
This lesson with Sven is really helpful if you are struggling with opponents who keep lobbing you. He breaks down why you might be getting lobbed so often, which is often down to the quality of your own shots being too easy. Sven gives practical advice on how to play lower balls with slice and manage your shot speed to avoid easy lobs, and what to do when your opponent is indeed lobbing you a lot. Understanding these tips can really change how you handle lob-heavy opponents.