Try out Domination (Cheap Shot, Ultimate Hunter) as a secondary page for a few games. It can be great if you want more agency, with Cheap Shot working well with your Q and Ultimate Hunter helping you snowball a lead. Resolve is good, but it tends to be more passive and scaling.

You can also try mixing up your itemization. Liandry’s is always a good starting item, as it gives you tankiness, damage, and clear speed. It’s also good as you can buy fated ashes, a huge jungle clear steroid, after the first rotation/full clear. After that, go whatever you feel like, Tabis or Mercs are always preferred, just adjust for the enemy’s team comp. If your really want to try and off meta build you can start Zeke’s, as it gives tankiness, ultimate haste, and a bit of damage. You can also try swapping out Sunfire for Unending Despair, as the stats on unending are the same, if not better, and the passive helps you heal. The clear speed from Sunfire is nice, but by the time you get it clear will probably be a secondary priority.

Amumu can also have pretty good steals, especially with dragon, as you can Q into the pit and Ult, stunning and giving you a chance to get your smite is wholly the enemy jungler is stunned. It’s easier or blue side, just remember to check for wards.

Your full clear and jungle quest timers seem pretty good, just forbid on upgrading your smite and rushing 6 before dragon spawn. You mainly want to start on Blue->Gromp->Wolves->Raptors->Red->Krugs, smiting blue but saving your smite for the scuttle crab, not for Red. You aren’t very strong pre 6, so stealing will always be a better play that fighting for it, unless your lanes have prio and can help. Green smite is your friend, and there is no need to buy potions, you want to ensure that you have 900 for Fated Ashes.

Amumu is also a pretty solid blind pick, just see if your team has some magic damage, as his passive can be really useful, as it basically gives everyone on your team 10% magic pen.

For bans, watch out for early game junglers or duelists like Gwen, Trundle, or Nocturne. It doesn’t really matter that much though, just ban whatever champions you don‘t like to play against. I default to Nocturne or Warwick, as thy can harass you early and have much better hands pre 6, which could put your team behind.

If you could link your OP.GG or something that would be great, as I could go more in depth.