Travelling alone is not uncommon and most solo travelers are able to meet other travelers at hostels, bars, organised tours or any place where travelers tend to hang out or congregate.
Some destinations lend themselves better to solo travel than others. You may find places where accommodations for a single traveler are less restrictive or expensive. There may also be places that cater to individual travelers.
Life is for the living, so don’t go crazy with worrying, but a few simple measures can make your solo trip a lot safer 🙂