What is the hardest part in game develop

hello, I am just wondering what is the hardest part in game develop, like which part cost most of time and money, and does anyone have an experience that can help to shorten the time or money use. Also is it better to use blueprint or c++ to make a game, thanks.

First you download the documentation and read carefully and practice the steps
then you follow video tutorials e.g virtus learning hub on youtube or epic games tutorials on youtube also

Both c++ and blueprints are great for making games, but you have to dive into the code to build your house on solid rock and use blueprints to quick prototype and compile an test gameplay.

learning never ends, so you pick a game you want to make a make it, dont worry about learning all the tools in ue4, focus on tthe game you want to make and start making