Can you freedive on your own? What circumstances might justify it, and what real risks you face.
Solo freediving is a sensitive subject, and no specialist recommends it, but understanding the risks is necessary for every diver.
Surface blackout can happen at any time, even to the best divers. Who rescues you if you black out while you are alone in the water?
Some very advanced divers practice meditative sessions in very shallow water with someone watching from the shore. But this has strict limits.
Look for a freediving club or an organized group that shares training with you. A buddy is not a restriction but a guarantee.
No dive is worth risking your life. A buddy is not an option but a necessity in freediving.