ok so the problem seems to be that i was sending a username not an ID (which is unique), so i made a way to do that, bu t it's still a work in progress figuring out the restults

srcs/requirements/svelte/api_front/src/pages/profile/ProfileFriends.svelte

@@ -4,7 +4,7 @@
   import Button from "../../pieces/Button.svelte";
 
   let errors = {friendRequest: '',};
-  let set = {friendUsername: '',}
+  let set = {friendUsername: '', friendId: Number}
 
   let user;
   let myFriends;
@@ -93,14 +93,18 @@
       console.log('friend is ')
       console.log(set.friendUsername)
 
+      set.friendId = allUsers.find(f => f.username === set.friendUsername).id
+      console.log('friend found: ' + set.friendId)
+
       // ok this version works
       // ok not really, requesterId and all that is good but...
+      // seems like i actually have to send IDs
       sentFriendRequest = await fetch("http://transcendance:8080/api/v2/network/myfriends", {
           method : "POST",
           headers: { 'Content-Type': 'application/json'},
             body: JSON.stringify({
-            "requesterId": user.username,
-            "addresseeId": set.friendUsername,
+            "requesterId": user.id,
+            "addresseeId": set.friendId,
             "status": r
           })
         })