Seeking a good suggestion

i'm from Bangladesh & haven't visisted India before. some of my desired dream states for travelling are Uttarakhand, Himachal pradesh, Kerala etc. I want to travel India next month & want to visit any one of the states among them but still confused which one would be best choice for me. I'm mostly a nature lover & love to meet mountain-hills, river, forest, animals etc. but as being a student i'ven't so much money to reach my dream. can u please suggest me which one state would be the best choice for me & how can i make my travel most successful?