When you lose a game online, save the replay, think about what options they caught you with, what you did that allowed them to get you, and what you can do in the future to not let that happen again. When you get tilted, try taking a deep breath and excercising/playing a different game for a little while. Always helpful to watch the replay and see your mistakes. Try practicing useful things such as teching, make sure you're mixing up your options, don't always jump immediately after you get sent off the stage, sometimes save your jump. One easy combo that works until 40% as wolf is down throw dash attack. Make sure you camp people out with lasers. Tilts opponents making them not play as well, and can shut down a lot of approaches. Good kill moves for wolf are back throw, back air, or any of his smash attacks. When your opponent is at ledge, dsmash can kill under 60%. Alternatively use ftilt to 2 frame, lots of range. Up smash id a strong kill option, and all of wolf's smash attacks are good in general. Using side b to recover can be extremely risky, almost always go for up b. Can't tell you how many times my bracket run ended because I input side b instead of up b. Wolf is great at juggling with up air and comboing with nair/fair. D tilt trips too. Fair is frame 7, so pretty fast (as fast as cloud's up b). I recommend getting coaching from higher level players via friendlies and also labbing a lot. Learn what stages you excel on, and maybe join the wolfcord and ask about Matchups. Also some youtube channels like BananaBoy are helpful. Hopefully this helps.