Please share your tips...

Nice to meet you, SseukSseukSsakSsak! The best tip is to pick your preferred team and focus on growing your signature cards! Make sure to do your daily quests and build up your team step by step. You got this!

If you go to the in-game community and click 'View Tips', the vanguard logs will appear. You can check there...

But in this game, the only real tips are either paying to win or grinding events like crazy. There's no other way lol.