Try to build Coreboot on Lenovo G505S using the restore_agesa.sh script in conjunction with the csb_patcher script, which applies a group of unofficial patches for AMD platforms
Lenovo G505S 16gb RAM - no (the A10-5750M processor has neither Intel ME nor AMD PSP), software probes - too, if instead of the closed UEFI from the manufacturer you install the open source BIOS coreboot+SeaBIOS: it will contain only a few small closed binaries , they were all dismantled and no backdoors were found. Someone made a script in which by rolling back 1% of the last commits (made after deleting the G505S) you can return AMD boards to coreboot - review.coreboot.org/c/coreboot/+/76832. You can install the AR9462 module, whose ath9k family WiFi is 100% open source.