It took me an embarrassingly long amount of time to realize the actual fishing mechanic, lol. I didn't realize that I was supposed to hold LMB -- I thought it was one of those fishing mechanics where you had to rapidly click to fish, and when that didn't work, I tried using keyboard buttons like space and enter. 😅
The tackle box was an interesting mechanic. I liked that you could combine the baits you got into new ones (although, I was expecting the actual sprite of the tackle box to be interactable and not through the hook icon on the top right).
As Hexx mentioned, this is very much an "idle" game. If you're someone who's a bit impatient like me, this may not be the game for you. From my experience, the only things that seemed "quick" to catch were the letters.