Filter by gamemode in the feed.

rl-tracker-network-filter-feed.user.js

// ==UserScript==
// @name         Tracker Network Filter Feed
// @namespace    https://rocketleague.tracker.network
// @version      0.1
// @description  Filters to gamemode in the feed.
// @author       You
// @match        https://rocketleague.tracker.network/live*
// @grant        GM_addStyle
// ==/UserScript==


$(function() {
    'use strict';
    $(".aside .card-heading").append('<div id="feed-tools" class="card-tools"></div>')
    $("#feed-tools").append('<a href="javascript:;" class="feed-filter">1v1</a>')
    $("#feed-tools").append('<a href="javascript:;" class="feed-filter">2v2</a>')
    $("#feed-tools").append('<a href="javascript:;" class="feed-filter">3v3</a>')
    $("#feed-tools").append('<a href="javascript:;" class="feed-filter"><i class="ion ion-close"></i></a>')

    function filter(f) {
        $('.aside .feed-item .message').hide().filter(":contains('"+f+"')").show();
        $('.aside .feed-item').hide().filter(":contains('"+f+"')").show();
    }

    $('.feed-filter').click(function(){
        filter(this.text)
    });
});