Here are a few videos of exercises you can try to improve your reaction times in padel. This is a crucial aspect of your game so it is important that you train it.
While important, keep in mind that there are more important things, such as better general physical preparation, technical skills, and tactical awareness.
If you’re already a top player, however, and are looking to gain that little sliver of advantage over your opponents, improving your reaction time might bring some advantage.
If you’re not a top player, then your time will be better spent elsewhere. It’s also worth differentiating between reaction time and shot anticipation. If you can read your opponent and you are aware of the possible shots he might come up with, then you will naturally react and position yourself quicker than those with an untrained eye, even if they have better reaction times.