Along the same lines suggest the Spelunky book from Derek Yu where he walks through his whole process (and all these Boss Fight Books are great for that) going from GameMaker Studio prototype to finished product:
https://bossfightbooks.com/products/spelunky-by-derek-yu
I also really like pico8 for initial dev with lots of rapid feedback. Lazy Devs Academy on YouTube has lots of good Pico8 tutorials, like this intro: https://www.youtube.com/playlist?list=PLea8cjCua_P3Sfq4XJqNV... Since pico8 source is often available you can look at it for inspiration, see for example Celeste: https://www.lexaloffle.com/bbs/?tid=2145
Along the same lines suggest the Spelunky book from Derek Yu where he walks through his whole process (and all these Boss Fight Books are great for that) going from GameMaker Studio prototype to finished product: https://bossfightbooks.com/products/spelunky-by-derek-yu
Last but not least, Itch is doing a California Fire Relief Bundle right now https://itch.io/b/2863/california-fire-relief-bundle that includes good gamedev books from Chris DeLeon. See his "Why are you making your own games? " quiz, https://form.jotform.com/233546996151162/
edit: add link to DeLeon to explain