I am able to run nvidia at the end of the day.
I am writing step by step everything if anyone else looking for same problem.
1- I formatted again (with rufus etc..)
2-I have booted manjaro, login screen show up kinda late.
3-Then when I lock screen, I couldnt unlock, had to reboot again.
4-So I auto install propriatery drivers from Settings-> Manjaro Settings Manager-> Hardware Config.
5-Then I added my username to bumblebee group.(
sudo gpasswd -a YourUsername bumblebee)
6-Then I enable bumblebee service via
sudo systemctl enable bumblebeed
7-Then I reboot again.
8- Finally, I run the command
optirun nvidia-settings -c :8
9- As a last step, I add nv black to default grub,
sudo vi /etc/default/grub
GRUB_CMDLINE_LINUX="nouveau.modeset=0 nv.modeset=0 modprobe.blacklist=nouveaufb"