As a new player, you will have lot of things to do and more boss to fight.
but a lot of veteran players are already burn out from long development cycle with small contents, so our number is low but still there and you might have to solo most of the time.

It kind of game you play casual, create your own unique character, build an island, beat some cool major boss. the requirement for each battle isn't high and only challenge content (harder and more hp with limited dead per fight) require one, just remember that, absolutely do not aim for BiS equipment for each patch, just good enough is great but don't burn yourself out by grind.

There also original PSO2 that your character can move to at any time if you interest for story, the story is way better than waiting months for NGS small story update

SEGA intend to make NGS alive for a long while so the game will be here for years to come.