I can quite clearly tell that this is your first try with writing a book and that you need inspiration. I think I might be able to help.
First a little about me. I am also a new writer who is currently writing his very first book (the rise of the serpent king) a sci-fi about war love secrets deceptions tragedy's and lies.
When I first started my grammar was also pretty bad...but as time went on I began to improve how? By reading the works of more professional writers of course. As I began to read some of the amazing works by other writers I improved my grammar and writing and now while my story does still need improvement I don't think it's to bad for a 14 year old such as my self XD .
As for inspiration...here's some advice stop writing for a day or two maybe a week or maybe for a month. Just go through your life like usual watch tv shows movies animal documentaries browse art sites. And more importantly go out more breath some fresh air.
Come back on on your computer or laptop or notebook or whatever you write on and think of a character maybe two characters think about what they look like and their personality 's then think about the world they're in.
Getting inspiration is different for everyone however...I hope this helps.