Hi and welcome. I'll be honest. I and many of us love Bless Unleashed, but it's also kind of a love/hate thing sometimes. The game has great potential, and when you play at you can feel what an awesome thing it could grow into. Devs have had their hands way too full with multiple platform releases, and the whole thing feels a little neglected, but with PC release coming in just a few months, we're expecting things to get back on track. By the time you hit endgame, there's a good chance that will already have happened.
BU isn't P2W, it's more pay to advance a little fast, or pay 2 convenience. In the end its effort and time invested that puts you on top. I don't pvp, and I find endgame fulfilling.
When BU was newly launched, you couldn't take 2 steps without tripping over another player. I play on Xbox Physera, which is one of the oldest 2 servers, and the population is stable. Global chat is always active. The game doesn't have random dungeon queues, and you can only queue for 1 dungeon at a time, so if you're not using global to find groups, you might have to wait a while.
The game can be very grindy. The grind has been nerfed a lot since launch. People used to refer to this game as Bless Souls for being so unforgiving. Nowadays, bosses you used to have to prep 2 weeks for can be beaten on your first attempt. But there is still a significant grind when it comes to actual leveling your way through the story.
Level doesn't really matter here. Power comes from gear score, and equipment does not have level requirements, so you could potentially buy an endgame weapon from the player market, equip it to a new toon and one-shot every enemy you meet on the way to higher level content