There are several things to avoid when designing a logo, including:

1- Creating a complex and unclear design. The design should be simple and easy to remember.

2- Using too many colors or different fonts in the design. Only a few coordinated colors and fonts should be used.

3- Using low-quality or unclear images. High-quality and clear images should be used.

4- Using icons or symbols that are unfamiliar to the audience. Symbols and icons that can be easily understood by the audience should be used.

5- Using images or icons that resemble other products or brands. Avoid copying designs from others.

6- Using text in unclear or very small fonts. Clear and readable fonts should be used.

7- Using designs that contain inappropriate or offensive images or symbols. Avoid using any designs that contain inappropriate or offensive content.