I see that you are using primal. So will answer directly. Nostr search takes a little to get used to and it's a bumpy ride. For primal you may like to input hashtags #sailing and #breadbaking in the advanced search and limit the global scope to your follows or network interactions to find some results. What is displayed there is not the entire network as it goes throught their cache server. So maybe try other nostr clients for ios like nostur or damus. There is content everywhere but the search is not very efficient. For sailing for example @hanon and @SailorsLog like to publish about that. @Corneelvm is a diver that posts about his experience and many more. For bread baking and any recipes you can use zap.cooking on web as the ios app is to come, searching for bread baking there brings you results as posts and recipes etc and if you login and follow an author there that stays followed in any other nostr app including primal and you can take on from there.