Go for bagpacker hostels, food at langars or roadside eateries, talk to locals for the best offbeat experience, always carry some identity proof, keep someone informed of your whereabouts.
Do research about the place you are visiting, use google maps, use public transports, stay at hostels rather than hotels, talk to locals, do not pack much, keep your national identity, don't drink too much, keep powerbackup for your gadgets, keep someone updated about where you are going.
One of the best places that you can plan is Hampi. It is a 6 hr journey from Bangalore and you can take overnight sleeper buses to reach Hampi. The place is beautiful and has enough places to cover for 3 days.
Yes,Himachal pradesh is now open for tourists and prefer to stay less than 5 days with valid booking and proper accommodation. Before visiting they have to undergo for covid test