Mentel already made great tips, but id like to give you some too! (I also am somebody who's relatively new to game dev too!)
1 - If you are stuck on an error you cant resolve even after quite a while of trying to solve the issue, you could try to ask ChatGPT what is causing the error, just copy the relevant lines of code and type something like this "Im getting a "(error message here)" error in (game engine (and engine version if needed) here), can you find the cause for me?: (paste code here)"
2 - This is very obvious, and you've probably heard this before but please take a break every once in a while, like for every hour, take 10 minutes to relax. This will help a lot.
3 - Create concept art, a rough draft of a story if there is one, and more beforehand. This will help you have a clearer path during development, and should always be done (in my opinion)
Creating concepts helped me figure out how i wanted the character in my game to look, how i wanted the scenery and music to look, and more. so i have no doubt that this could help you too!