Ventura dropped support for Skylake platforms on which it can only run with tricks. If you read the various guides and/or threads we have about Ventura on Skylake E7x70 laptops, you'll see that there are pre-requisites you need to respect. You'll need to:
fake a Kaby Lake platform -> switch from MBP13,1 to MBP14,1
fake KBL graphics since SKL are no longer supported and no SKL drivers are provided -> inject KBL framebuffer layout 0x59160000 (or 0x591b0000) and iGPU device id 0x5916
update Lulu and Whatevergreen to latest version (WEG v1.6.1 minimum) -> Whatevergreen will then apply the necessary patches to fake SKL as KBL graphics
Rest should be unchanged.
Note that it's a lot easier to use Clover in that context because it'll allow you to boot Monterey with a separate additional target Ventura config (manually add boot arg -igfxsklaskbl for Monterey only), download the Ventura installation app and install Ventura. Thereafter, you just need to call on that config as default to boot Ventura. If something goes wrong, you just boot Monterey as usual.
With OpenCore, you don't have that option to call on a separate config file so you must ensure your file is 100% correct from the onset. Better to have a bootable USB key for backup...
See these, among other things:
https://osxlatitude.com/forums/topic/17636-macos-ventura-is-out
https://osxlatitude.com/forums/topic/17292-macos-ventura-130-beta1-early-feedback-and-findings
https://osxlatitude.com/forums/topic/17336-macos-ventura-130-beta3-is-out
https://osxlatitude.com/forums/topic/17629-macos-ventura-130-rc-is-out
https://osxlatitude.com/forums/topic/15648-dell-latitude-e7270-with-i7-6600u-hd520-and-1920x1080-touchscreen-high-sierramojavecatalinabig-surmontereyventura/?do=findComment&comment=116192
Good luck.