SoT is beautiful, it can be whatever you want it to be, always keep your eyes on the horizon.
Solo is doable - it is SoT on “hard mode” with the new update it is even harder. If you like a challenge, then try solo.
SoT is designed to be experienced with friends, all of the people I play with are people I’ve met on the game.
There is no game out there even close to what SoT offers.
Hope to see you out there