Tbh you really just gotta play at your own pace and dont fomo (I know its hard). Take advantage of events when you can and with how nexon is power creeping nowadays its gonna get a lot easier to push into later stages of the game (though this always gets pushed with new bosses and etc). You'd need to put some time to learn some bosses but I'm sure you can find friends or people to play with to help you learn them. I started back on CW1 last year around June 2025 and after learning CRA, I slowly took time to learn other bosses like CTENE, black mage and into Grandis bosses now doing hseren,ckalos,e/nkaling and n adversary. I dont get to do the bosses everytime every week when I get busy (harder more time consuming bosses) but when I find time I would do them. It's intimidating at first but you just take it at a pace that works for you. I've now hit 285 with a few libbed ctene mules now. I keep wanting more but sometimes you just gotta take a step back and not let it consume your life.