Here are some examples of using the word **«useless»** in English:
1. It was a useless attempt to convince him, he was too stubborn to listen.
2. I tried to fix the broken lamp myself, but it turned out to be useless, I need to call a professional.
3. She spent hours trying to find her lost keys, but it was all useless, she had to ask for help.
4. The old phone was so slow and useless, it was time to buy a new one.
5. His advice turned out to be completely useless, it only made things worse.
6. The company's marketing strategy was useless, it didn't attract any customers.
7. Trying to argue with him is useless, he will never change his mind.
8. The old computer was so slow and useless that it couldn't even open basic programs.
9. Her attempts to learn a new language were useless, she needed more practice.
10. The old map was useless, it didn't show the current roads and buildings.