If you are asking for solo travel spots in India, here are a few to look at
Ziro
Varkala
Nubra valley
Majuli
Kutch
Jaisalmer and Amritsar. While Manali, Pondicherry, Goa, Gokarna, Rishikesh, Haridwar, Shimla, Bangalore, dhanushkodi, Hyderabad, Mumbai, are a few popular solo travel spots. Sharing a few solo travel spots international, see if it is suitable for your travel. Paris
Costa rica
Switzerland
Amsterdam
Austria
New York.
Here are some places you can explore solo in India. Manali, Himachal Pradesh
Srinagar to Leh Road Trip
Rishikesh, Uttarakhand
Tawang, Arunchal Pradesh
Udaipur, Rajasthan
Khajuraho, Madhya Pradesh
Goa Mumbai, Maharashtra
Shimla, Himachal Pradesh
Alleppy, Kerala
Kutch, Gujarat
Darjeeling, West Bengal
Pondicherry
Varanasi, Uttar Pradesh
Try Tirthan Valley or Parvati Valley if you want to begin with. I would also recommend Mcleodganj and Bir if you intend traveling towards Kangra Valley.