There are many techniques to make the opponent lose balance during a fight. Here are some common methods: 1. **Weight Shift**: Use the opponent's center of gravity to try to push him into an unstable position, such as applying force from the side or back. 2. **Leg Hold**: Grab the opponent's legs or kick them to directly affect the opponent's support point and cause him to collapse. 3. **Pull**: Use the opponent's clothing or wrist to pull backwards or sideways to disrupt his balance. 4. **Use the Ground**: Trip the opponent or push him to the ground to make him lose his center of gravity. 5. **Side Bump**: Hit the opponent with the side of your body and use the impact to make him lose balance. 6. **Throwing Techniques**: Learn some basic throwing techniques from wrestling or judo to be able to throw the opponent down quickly. 7. **Reverse Force**: When the opponent applies force to you, you can use his force to push him away and make him lose balance. 8. **Quick Movement**: Use fast steps and good movement to confuse the opponent and find opportunities to make him lose balance. Please note that fighting is risky and may have legal consequences. When encountering a conflict, it is recommended to prioritize peaceful resolution and avoid physical confrontation.