I have bought my jacket since last winter.
بتقدر تستخدم جمل أبسط مثلاً :
I bought my jacket last winter
لا تدخل since إلا لما تذكر تاريخ مثلاً :
I didn’t buy any jacket since 2015 winter👌🏻

My jacket have bought since last winter?

My last jacket have bought since winter
او فيك تغير فيها برضو وتحكي:
My jacket have bought since last winter
🤷🏻‍♀️

It won't make a correct sentence

I have bought my jacket since last winter. 🧥

My jaket have bought since last winter 😅

Since I have bought my last winter jacket

My jacket ¿Has bought