First, you need to prepare bait for fishing. There are three types of bait in the game: shrimp, small fry and earthworms. It is recommended that you buy shrimps and small fry. Although the daily limit is limited, they are better than earthworms. You may not be able to catch fish with earthworms, so using earthworms as bait is very costly.
Next, you can go fishing. Different types of fish are caught and the experience gained is different. The more experience, the higher the proficiency, because there will be a fishing mission later, and the requirement is that the player's fishing level reaches level 10. If you want to quickly improve your fishing level, you need to hang up and fish. There is no other way.
Also, if we want to catch some rare fish, we have to use higher-end bait. For now, shrimp and small fry are enough. Anyway, just don’t buy earthworms.