Backed into the corner of a hallway...training.

It sounds sexy to everyone, "Training Alone". However my experience has been that those who say they enjoy being alone a lot are the people who most crave the company of others. We are tribal primates and for 99.99% of our existence on this planet, being alone and away from our tribe meant inevitable death in relatively short order.
Unfortunately we are fed the line in movies and books and popular culture that the ultimate is the "lone wolf" or the solo maverick. This is, from an evolutionary perspective, laughable. That said, there is the important time in a developing young man's life where time alone- prescribed and lead by elders - is the hero's journey he must go on in order to come out wise and grown at the end. This is temporary and is a different topic which we can delve into in great detail at some other time.
For now consider that you alone must come to terms with why you train, how you train, and with whom you train. The majority of my training time in life has been with others in martial arts. It has only recently in the past five years or so that my solo path in calisthenics has been alone. And it is worlds apart.
You must find the fire and the discipline to make gains and to bring yourself into the gym or yard or wherever t is you do what you do, but you must do it alone. Even in group training nobody is going to do it for you.
Food for thought.