Not liking an experience is always due to a mix of internal and external factors - the key is to disambiguate these. It's possible you don't like being alone primarily because of the feelings associated with loss. It's also possible you don't like being alone even if there was no loss. But what is the contribution of each of these to your mood? What are other factors?
You might not have this information. Changing environment is a good way to gather information because it triggers new thoughts and insights. That can be a good way to frame trying things - as a way to learn about yourself, rather than some new thing you now have to stick to. It could be useful, it could not - but nothing lost. If you go to the dog park and nothing much happens, no big deal.
In your shoes, I might be tempted to go the nearest big city without any particular plan. Just the energy of the place will have an effect. Go to busy places, quiet places, restaurants, cafes, art galleries, shops. No pressure for anything to be a certain way, or to have some big resolution. Or perhaps go the other way and go into nature.