I can’t comment on the Spanish CEO category, because that isn’t a service category that I am familiar with. However, I can say with certainty that there is a drastically increased level of competition on Fiverr, as a result of the global pandemic. More sellers, means existing sellers tend to see lower metrics from the search results. Perhaps there are too many people trying to sell services for your keywords, and your services aren’t being seen as much.
It’s also worth noting that, people just might not be searching for your services as much. The world is changing – even moreso because of Covid. Perhaps there isn’t as much demand for your services now, compared to in the past.
Perhaps this might be a good time to start marketing and promoting your own services too, instead of relying on only the Fiverr search system to provide all your orders.