Mac vs robin its important to remember that he has armor on a good deal of his moves. charge your thoron slowly as he will most likely rush you down. Mac penetrates your zone, so try to get arc fire off when possible to keep him zoned and so you can charge thoron. Keep in mind that you can spot dodge and shield out of charging, so use that to your advantage. when mac gets in, youll have issues due to robins tools, but a spaced fair will get him away well imo. fair OoS is safe on mac, and if mac goes through you with a dash attack or a side b you can Usmash OoS for a safe option. In general. when you get him off you, start storing thoron. it can work super well in conjunction with arcfire to setup a kill. also remember to SDI out of macs jab.
Also I dont know if I ever talked about it but im a speedrunner as well.I work on Ocarina of Time categories,particularly one I am close to WR in called All Medallions, although I havent worked on it in over a month. I also created a few routes that involve arbitrary goals but exploit a lot of cool glitches. idk if anyone cares, just wanted to share lol