first i downloaded the installer from the forge website 1.16.5, then i made a new folder and installed the server in that file, and then i made run.bat file and put "java -Xmx4096M -Xms4096M -jar forgeserver.jar nogui PAUSE" (pause is on another line), then i renamed "minecraft_server.1.16.5.jar" into "forgeserver", then i started the server by launching the batch file i created, it worked fine but there was no mods folder