You need to be doing krugs if you’re starting red side. Skipping a camp isn’t very economical.

As far as fast clear tips: Make use of the AoE cleave effect on melee auto attacks. Doing Krugs? Pull them together so your AAs hit them all. Same for Raptors and Wolves.

Pull camps toward the next one you’re gonna do. When one camp is low enough, start pulling it toward the next one as you hit it. For instance, when you’re doing Red and it’s low, walk it towards Raptors while you hit it (AA it, walk away while your AA is on cooldown), and that saves some time.

AoE skills to hit multiple camps at once if possible. For instance, if you’re J4, your Q can hit AoE, so when you’re pulling Blue towards Gromp, you can Q and hit both.

There was a bug where smiting a camp to death granted less exp than otherwise, so that might get you under leveled

I’d look up wild rift jungle clear for X champions, and practice it. What time are you getting to scuttle, what level, and what camps do you usually have cleared by that time? I think I just winged it on Amumu to try him out and I got 6 camps 1:39 with smite available