You need a different FW. Plug your equipment teeth numbers in here.
https://www.sheldonbrown.com/gear-calc.html
Basically, you want to zig zag down the big chain ring columns to change your gear inches. Each zig or zag cuts the change of going straight down in half.
I'd get a 5 speed FW to really explore half step plus granny.
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I don't do: disks, tubeless, e-shifting, or bead head nymphs. But I do hate all e-bikes.