Hello.I know that many game developers need good unique sound effects for their games,i tell about sites where i found nice sound effects.
first good free sound effects https://www.lucidsamples.com/free-sample-packs/181-free-sound-effects-sfx-pack.html (https://www.lucidsamples.com/free-sample-packs/181-free-sound-effects-sfx-pack.html)
second site with free sound effects http://sweetsoundeffects.com/ (http://sweetsoundeffects.com/)
if u can buy good high sound effect , i can advice u this pack https://www.lucidsamples.com/sound-effects-packs/156-1000-sfx-production-tools-vol-2.html (https://www.lucidsamples.com/sound-effects-packs/156-1000-sfx-production-tools-vol-2.html) and this https://www.loopmasters.com/genres/46-FX/products/1421-Warfare (https://www.loopmasters.com/genres/46-FX/products/1421-Warfare)
Maybe someone know good sites with sound effects,pls share with me.