i am playing on a linux mint distro, and am attempting to run a forge 1.20.1 server

this seems to be the relevant warning message:

WARNING: A restricted method in java.lang.System has been called

WARNING: Java.lang.System::load has been caused by com.sun.jna.Native in module com.sun.jna (union:libraries/net/java/dev/jna/jna/5.12.1/jna-5.12.1.jar%2391!/)

WARNING: Use --enable-native-access=com.sun.jna to avoid a warning for callers in this module

WARNING: Restricted methods will be blocked in a future release unless native access is enabled

note: i have tried putting this in user_jvm_args but it doesn't seem to work

Hold on, wait a minute. So are you saying that the server you are trying to run is crashing or failing to work properly? If this is the case, then it should have nothing to do with a warning message. Could you be a little more specific as to what's going on? Are you just annoyed that there are some warning messages being displayed? (I mean, if that's the case then I can totally understand.) Again, I notice that you use the word "attempted" when referring to launching the forge server. This gives me the impression that something is going much more wrongly than a warning.