That's alright, that's how we all learn.
But I have now played your game and as expected I was actually really really enjoying it. The concept, the mechanic, the core loop - brilliant. All of it was really really good. The three choice of mechanics [increase fishing distance/number of fish caught per turn/idle earnings] were well thought out and definitely add more to the gameplay experience. It gives the player a reason to keep playing so they can find out what more fish they can catch, while also providing them the satisfaction of knowing how far they've come in the game. Like the player will get the feeling that there is an end to the game and it'll want them to finish it. I even loved the visuals. I think everything just jelled together.
But, obviously, there are definitely improvements that can be made. Firstly, do add a quit option to leave the game. That's really important. Secondly, add music. Music is crucial for video games and for improving player's gameplay experience. In this type of game, some calm ambient background music would add so much to it [if you need royalty free music check out Youtube Audio Library]. I would recommend that when the player has caught the required fish per turn and the rope is being pulled up, there is a boat on the water that the rope is pulled towards. That adds a lot to the experience. Right now, it feels weird to just see the rope pulled up and there's nothing on the water. The "button" [I forgot what it was called} that appears after you've caught the fish is too big and needs to be adjusted. It's hiding the amount earned and has an unnecessary gray shadow behind it. Also, as much as I love the three mechanics, I think the economy is all over the place. Like why is the price for the number of wish I can hook increase when I buy the "increase idle earning" option. Why is the increase idle earning option always $120. Economy is a very hard thing to get right on first try so there's no shame in it, I do recommend play testing the game and also reading up more about game economy so you have a better understanding of the conventions and how to make sure the game doesn't become too easy so that the players can exploit it and finish it, nor too hard that it turns the player away from playing the game.
I also had a few recommendations of maybe adding powerups in the water that the player can "pick-up" which adds to the game. Like for example, there could be a powerup in the water which when the player hooks it, allows the player to pick-up 5 more finishes for only this turn or for the next two turns etc.
But other than this, I thoroughly enjoyed the game [really do wish there was music in it]. Definitely refine it and I hope you guys work on it more! Great job!