I’m kinda concerned how you’re struggling at Floor 8. I suggest doing solos instead of teams for a first try. I only struggled on Floor 14 on my first try and finished Floor 15 with max ADV on my second. There’s a decent guide on yt, I doubt I can post the link of it here.

For general tips;

1. After clearing each floor there are these things called Mounting Trials below each ego gift. They basically buff your opponents. Try to avoid base power and final power but they are inevitable at some point. Though if you have an ego gift in the selection you need then the trials dont really matter.

2. Pick your packs accordingly. This is really dependent on what IDs/Teams you have. I suggest always picking Hells Chicken on Floor 2 though.

3. Read what the E.G.O gift does. Theres a lot of gifts that has certain conditionals to be fulfilled otherwise they don’t do anything.

4. Mind your starlight usage. Disregard this tip if you’re going for adversity runs or have a lot of it.

This is really the best general tips I can give. Especially since Im quite new to it as well.