Hi, I found this sound effet freebies. It's really nice, 20GB of sound effet: medieval, space, forest, car....
" In celebration of #GDC2017 we are giving away 20GB+ of high-quality sound effects from our vendors here at Sonniss. You can use them personally or commercially without attribution. (Everything is royalty free)."
http://www.sonniss.com/gameaudiogdc2017/