If other optimization modpacks are not that good, try this
This modpack lets you get the highest fps possible with shaders
It uses neoforge, not fabric or forge because neoforge has godly optimization
If you dont get good fps without even any shaders, using 8x8 resource pack is recommended
Not only optimization mods but little tweaks so you can play vanilla+ experience without adding any mods
Theres already downloaded five shaders, you can pick any of them for your system.
Bsl (high)
Solas (high)
Photon (mid-high)
Complementary (medium)
Sildur's Enhanced Default (low)
You can download other shaders if you would like
You can download other mods if you would like
You can download other resource packs if you would like
I have 4060 i5 and i never seen this much fps in minecraft with 32 chunks and shaders