The only way you will get better is finding a martial art or quality self defense system and learning and training what they have to teach you.
Posturing and looking tough can work but it can also come across as a challenge of masculinity and further escalate a fight, if you try to bluff and be beats you up you look twice as bad.
Shaeeck gave a great answer. I agree with her.
If you don't know how to fight then don't.
Find a good school and begin to learn how to defend yourself and hope to never need to use it
Trying to look tough can get you hurt or worst.
This is what I will add.
Get a big dog with an intimidating look and bark. The tough guys will not try to get close because of the dog
Even better after getting the dog get it professionally trained for personal protection, Schutzhund, PSA, Mondio, French Ring, or some other dog protection sport. Of those I prefer the one that is not a sport and train for personal protection.
Here's my advise: Don't worry about looking tough, worry about being able to defend yourself.
Your first priority should be to live a happy, stress free life. And being in shape will help you do that, trust me.
You don't need to worry about growing liberty spikes, pierce your whole face( so bad in a fight btw) and get tattoos just to intimadate. Some people will not be intimidated by that anyways.
What you should do is take an art that you can learn quickly so you will be able to defend yourself right away. I recommend Muay Thai, great art, simple, and it works! Just find a good dojo that doens't only do stuff sport oriented (even though we focus on that, we still work on ground and pound and some times even grappling). I also recommend that for cardio you do sprints. This will help you learn to use a whole lot of energy in a short period of time ( a fight) instead of a weak amount of energy for, say, 5 miles.
Weightlifting will be the most challenging part, as it will contradict with sprints and Muay Thai. I only do stuff I feel helps me with Martial arts (I take Brazilian Juijitsu, Kempo, and Muay Thai) so I do rows for pulls in Juijisu, squats and lunges (because you use your legs in everything), and bench press for punching power. I also do deadlifts for a strong lower back, and clean and jerks for fighting power. And curls for bicep strength. Everything else is strength-oriented for fighting or for balance in the body (like, rear delt raises for the weaker rear delts). Good luck, the most important thing is you start training and NEVER BACK DOWN!
Fighting isn't everything.
If you really want to be able to flatten them, hit the gym.
Go to the gym 3-4 times a week and take kick boxing or boxing, in about 3-6 i guarantee you will be able to take them if your dedicated.
Depending on where you live..........
You can carry a can of pepper spray, if he attacks you
squirt him in face with pepper spray. And run for it.
By the time he recovers you'll be many blocks away.
In some states and cities it is legal to carry
a stun gun on your person.
If someone tries to pick a fight with you. Simply pull
it out and flash the voltage sparks on the stun gun.
That usually gets the tough guy to back off on you.
when you know you are going to be hit do not wait for him to hit you, you need to start punching him in the face over and over again real fast as hard as you can, try to hit him in the temple area, keep punching until he goes down, use every part of your body in the fight, bite, kick, knees, elbows, use your fingers to jam his eyes out, grab his hair or neck to pull his head down and knee him in the face, practice punching on a bag to build power to your punch's, speed, power and knowledge are the main winners of the fight, join Martials Arts as soon as you can, look up Gracie jujitsu, it will help, no one wins every fight, if you lose do not worry about it just try to figure out what you could have done different to win then practice it, a loss should only make you a better fighter not depress you, work out everyday on self defense, remember practice, practice, practice, good luck
Learn the anatomy of human body to know vulnerability points. Then again, this may go against your pacifist beliefs. Thus, either purchase a firearm, get a security guard, or travel in groups more
Smith and Wesson.
I am very quiet and physically weak. I hate fighting. But sometimes someone picks up fight and I am not able to defend myself. I feel worthless. I don't have any previous fighting experience.
Is it possible to dissolve a fight by just posturing and looking tough? What else can I do to improve my real life fighting skills to defend myself? How not to get depressed after loosing a fight? I feel sad for so many days if someone picks up a fight with me.
Thank you..