Just finished Yakuza 0 last night while sipping a nice glass of Yamazaki whiskey, really great story and progression and side stuff in the game. Didn't get even close to a platinum though, you have to do all the side story stuff including lots of the karaoke/dance/gambling stuff and I didn't really feel like doing any of that.
I found getting money super easy, just get a few slime guns (later on find a zap gun in treasure hunter or 1m wonder machines) and just shoot the big guy who wanders around town, if you equip the pink spyglass item you can see him on the map anytime. After 8-9 defeats the guy always drops 1b+ yen, and its no big deal to lose to him since he "banks" all your money and adds his own always.
Just received the Yakuza 1 remaster (Yakuza Kiwami) but probably gonna wait until after UC4 DLC and Destiny 2 to get around to it.
Would highly, highly recommend this game to anyone who enjoys a good story, japan, or fun combat mechanics.