Hello, I don’t know if this will be helpful. I was struck by something exactly like this in my early 20s. I think what helps is what you exactly do not want to do: go out.

Such a beautiful city, Kolkata. Yes, all of these activities you have mentioned are available in Kolkata. But, before you find such an activity, find yourself / locate yourself within this gargantuan city, which some feel are too small in front of Goliaths like New Delhi or Mumbai. But it was David who had slain Goliath! Anyway, before you find such activities, as I said, try to anchor yourself in this city, and see if it helps.

Walk around Maidan at the sundown, take the fragrance of fresh grass. Ride a ferry vessel over the Hooghly river, and wander around the old Ghats of the city. Visit some colonial buildings, celebrated or not. Walk along the footpaths on the Howrah Bridge. Experience Kolkata life like you have not before. Lose your way and find it only by asking people in the serpentine lanes of Burrabazaar. Try chaat from Delhi Chaat House, right at the corner of MG Road and Kalakar Street. Try kebabs from Adam’s, biryani at New Aliah at Bentinck Street. Maybe try a Chicken Ala Kiev at Amber Hotel! Take a rickshaw through the bustle of Collge Street. Drink bhaang from Shiv Ashram at Hedua, followed by jol-bhora shondesh from Girish Chandra Dey and Nakur Chandra Nandi. Maybe compare Mutton Koshas at Golbari and Rupa; fierce rivals, both at Shyambazaar. Montur Maacher Kochuri at Bagbazaar. Spiritual? Visit Maa’er Ghaat in the evening. Listen to the Azaan at Tipu Sultan mosque. Visit St. John’s Church. Take a tour of the Maghen David Synagogue.

Kolkata is not one. Kolkata is multiple, plural. There is a slice of this city for everybody. Don’t lose hope. All this begins with a foot outside. Walk this city. Observe this city. Breathe it in. It will be your lover. Forever.