Looks like a decent amount of work to get done in a week. If you want to move on to interesting mechanics, I suggest checking out quill18creates on youtube. If you’re interested in learning cool effects, I would suggest shader programming.
So far so good! You’re doing great for your first month for sure.
My suggestions based on what you’ve shown here:
Try not to focus on the environment as much as the mechanics at first. I, along with many others will spend days just creating the world/level at first. However, without any mechanics (AI, UI, Inventory,Attacks,Health,etc.) the game becomes boring rather quickly.
Create a desire early on for the player to do something. It can be reaching the top of a mountain, finding a lost key, anything really.
Choose a language and stick with it. Learn everything about it, not just in regards to Unity. C# is a really great way to go in my opinion.
“What I should focus on now”? You’re making great strides attempting new challenges that are improving your skills. Maybe try pushing in a different direction, like a 2D puzzle game.