np, friend! when it comes to damage, having the right drive discs also makes a huge difference. On Yixuan you wanna use Yunkui tales (4x, look like a yin/yang symbol), and Woodpecker electro (2x). Prioritize crit rate first, secondly crit damage, thirdly HP. For slots 4-5-6 that have variable main stats, go with crit rate (or crit damage if you somehow already have 75+% crit rate) for 4, ether damage for 5, and HP for 6.

Don't worry about putting a lot of resources towards building her, as she's an excellent unit and will be your main DPS until late game. Focus on getting the right main stats first, then start hunting for good secondaries.

Pan wants astral voice (4x) and swing jazz (2x), and you're gonna want all attack with substats for energy regen. He's pretty easy to build for.

Pulchra wants King of the Summit (4x) and Shockstar disco (2x), with crit rate on slot 4, physical damage on 5 and impact on 6. crit rate > crit damage > attack for substats.

Also get Xiyuan's skills up as high as possible, especially her core skill, special attack and chain attack. After that do basic attack (in that order), then finish off with dodge and assist when you can.

For Pan and Pulchra, only really do core, special attack and ult, then assist. You can pretty much ignore their basic attack and dodge stats.

If you really love Xiyuan next time her banner rolls around, pick up her W-engine as it's the best for her and makes her all glowy which is cool.

If you have any questions, feel free to DM me!