I am using a third-party launcher that has pre-installed forge versions of Minecraft. When I insert mods from CurseForge, I extract the files and as expected put them in the .mods folder. I am guessing that there is an error with the file transfer but I don't know for sure and sometimes I use Forge to test mods that I created before releasing previously on a different pc, so I don't know if it is the if it an extraction error but if are any tips or knowledge reply and I will read it. This is also will be kept on the forum for others that have the issues.