My cat is vomiting every day 😢

Dear cat lovers,

I am facing a situation that doesn't make me sleep at night. My cat ( that is a mix of Ankara Turkish and a street cat) is vomiting every day. He is a 9 year old cat with long hair and since the beginning of this year is vomiting almost everyday... We obviously went to the veterinary, did the ecograpgy and the veterinary said is all good, just brushing him more is more than enough.... I brush him everyday but he is still vomiting. After vomiting sometimes he looks visible exhausted sometimes not and he goes to eat again. When he vomit is pulling out sometimes just hair, sometimes just food, sometimes both. I am.not here to search for medical advice but to understand if anyone else had or have the same experience with your cat, and what did you do for.