OTA is down, but you can root V23 by extracting the *V23* boot image (@Zarhan, the bootloader is lk (what was recently taken down by Mediatek), and the boot image, i.e, the kernel, is what the bootloader passes control of the CPU to), and rooting that with Magisk on the device.
I could get around to this this weekend, and publish it somewhere. It's relatively easy to do.
I've been trying to get Lineage on my Cosmo, and even with my MTK debug cable, it just boot loops.