Well i must say you must visit Vietnam , this country visa process is very easy plus the currency is also low as compare to india, can see the wonderful beaches .2:-My Son :-Located on the central coast of Vietnam near the Duy Phu? village is the important archaeological site known as My Son. 3:- Nha Trang :-Located on one of Asias most beautiful bays off the coast of South Central Vietnam
4:- Sapa :-Surrounded by pictorial mountains, rice terraces and a diversity of hill tribes in the remote northwest of Vietnam.
5:- Hue:-Situated on the banks of the Perfume River in Central Vietnam, Hue once served as the imperial capital of the Nguyen dynasty.
6:- Ha Long Bay:-With its aqua-green water and cluster of limestone rocky outcrops rising from the water like sea dragons, Ha Long Bay resembles a scene from a fantasy story. Located about 130 km (80 miles) east of Hanoi in northern Vietnam
You can visit Vietnam. It has wonderful places with breathtaking views. It will be cheap because 1 Indian Rupee equals 314.01 Vietnamese dong. Must visit places are:
Ha long bay
Ca?t ba? island
ho chi minh city
nha trang etc... There are many more other places to visit in vietnam...
You can plan a solo trip to Cambodia and Vietnam. Both are budget destinations and you can obtain evisa on arrival without any hassle.
Also they are pretty safe countries and December is the best time to visit these places. I went to Cambodia in Dec 2018 on a solo trip. You may refer my blog for the same.
Best and cheap option would be Thailand.
no visa fee, cheaper airfare and there is enough to explore in 10 days, bangkok, Pattaya, Phuket, ko samui ans so on. If solo backpacker, book dormitories you get in cheaper rates than fancy hotels.