Install driver failed in openSuse leap 15.3

Based on all the information from website, i want to install, but failed with “Module.symvers file is missing, or does not contain any symbols exported from the kernel.”.
I installed gcc, kernel-devel, kernel-source, added “blacklist nouveau options nouveau modeset=0” to /etc/modprobe.d/50-blacklist.conf. After all this, when init 3 and

sh, nvidia-installer.log said “autoconf.h missing”. So i “make oldconfig && make prepare” then “make modules” in “/usr/src/linux” folder, and found “Module.symvers” finally showed up in “/usr/src/linux”. Then i sh, still get “Module.symvers missing” error. by now, i have no idea …