I don't think he's made it worse, but when he took office the economy wasn't exactly in shambles. In other words, he inherited a pretty good economy from Obama.
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He can't take credit for everything though.
We will see whether or not he has made it worse when the effects of his trade policy kick in. He will have to take credit/blame that. I predict that he will make it worse, and his actions could trigger the next recession.
You are very correct, the trade policy is the determinant afterall. Though, he has significantly improved the economy, the unemployment rate was drstically reduced and the US stock market record all time high under his administration. But, there is a saying that; ends justifies the the means, let's just wait and see what the trade policy will bring.