Thank you very much.
All of these ideas are amazing. My favorite is MetalNando. I hope you do not abandon this game because it looks very promising. If it releases, I will play it to the end for sure.
I played it one more time, and I found a couple of bugs. For example, when you jump, you stuck on the wall and have to press to go left, so the player would be able to move again. You can fix it by putting a physical material with 0 friction into the player object. In the second one, you can jump infinity times on the air. You can set it by adding some grounded checkers and let him jump only when the grounded boolean is true.
Also, I am hosting a game jam that is going to happen at the end of September. You will be able to win some money to buy a pizza for yourself. I hope you join us. The link is here:
https://itch.io/jam/totally-ranked-jam
P.S. You can try making webGL builds of your games in unity. They can make your games playable in browsers.