I don't know what can be disliked in Tenerife. I liked absolutely everything here. Parks, beaches, climate, people - everything is perfect. But I was especially struck by water activities. We rode jet skis, went on free fishing, participated in excursions on a sailing yacht. But if anything, it is better to book places in advance, as there are a lot of people who want to. You can do it here https://joyme.fun/water-activities/. And yet, be sure to discover the underwater world of Tenerife. If you choose a diving center, then on the same site there is a Big Fish - they are very cool.