Oh. So I guess I need a guild that isn't completely dormant, then.
Yeah, keep joining and leaving until you find one that is at least setting up for Guild Wars. But on that note if you find a friendly one it's a great way to get runes and catalysts you need too and also build up Guild Currency to buy the monthly Terra Phantasma. For Guild Wars, always fight three times, the number of Mystic Bookmarks you get is directly related to each of the 3 attacks. You get rewarded more for winning an attack, but you still get rewarded for losing an attack.
They also very rarely drop from hunts, to the point that it's in no way an effective way to farm them. But yeah, at my Guild's rank I get around 66 per won Guild War and there's a match on Monday, Wednesday and Friday. So if I'm lucky 3 pulls a week at a 1% chance to pull a whale unit. Not great, lol, but one can dream.
You can spend something like $700 a month on Mystic Packs, which many whales do, and still not even land one of the highlight units. It's a really predatory system that so far is only getting worse now that the best units are getting release through the mystic system. The community is not happy.
They have a chance to redeem themselves by making Dizzy OP so everyone can feel some progression after hoarding for months for this collab, which I'm expecting because they want all the people that spent everything on Baiken to buy into the Dizzy pity. If Dizzy is underwhelming they'll have a very angry community since that'd mean all the best units are being released via a very whale-y mystic system.