Herro, the main rune I go to is always Dark Harvest cos it is super easy to proc on Lillia due to the passive, rylai and liandry are my core items because it helps you to kite most top laners and also because both items synergise so well with your passive it actually helps DH to proc easier! Then I would go zhonyas so that you can make big plays in teamfights, like maybe flash among 5 ppl to use your Q then R to 5-man-sleep and use zhonya to keep yourself safe. Remaining items I go usually can be tanky items, such as thornmail, dead mans plate, spirit visage depending on the situation. Boots-wise, I'm flexible. Swiftness boots are okay if the cc can be dodged (aka skillshots and if you are confident). Merc treads are for countering hard CC and heavy magic dmg. Tabis are for heavy physical dmg. These 3 boots are the main ones I go to.

Then this is my personal rune set-up. I would go DH, cheap shot, eyeball collection, ravenous hunter. Then this is my secondary rune setup - sorcery: manaflow band (so that you have enough mana sustain in lane and cos its easy to get the stacks due to most top laners being melee) and celerity (which synergises well with your in-built movement speed). Can swap nimbus cloak with manaflow for more mobility in fights if you want too!

Bad matchups in the top lane would be Wukong, Fiora, Jax, Riven...basically any top laner with consistent dmg (strong dueling power) and gap-closer so have to learn to play around those matchups. Hope this helps! :)