There are no stupid questions, only stupid answers. And I’ll leave those for our resident troll.
However, the question which player to target for a potential trade is indeed very difficult to answer. We don’t know what your league looks like, how the other managers respond to trade offers, etc.
If this is a redraft league, check if anyone has interest in acquiring Kyle Pitts. Some managers are always happy to overpay for a big name, so see whatever you can get for him.
As for the Chase trade:
On paper, that looks like a very good offer for you. I take it J Williams is Jamaal, not Javonte, and this is a redraft league?
Whether this trade is good or bad for your team greatly depends on the health of D’Andre Swift. He seems to be trending towards playing this week. If he does, stays healthy, and leads this backfield, he will be your RB1 for the rest of the season, and you can afford to give up Jamaal.
However, if he gets injured again or remains on a snap count, you may be left with only 2 startable RBs, and they are Darrell Henderson and Brian Robinson. Robinson might keep trending up, but Henderson does not profile like an RB you’d want to rely on every week.
Giving up Lamb and Curtis Samuel for Chase is a no-brainer. Samuel is only a depth piece for your team anyway, and Chase is better than Lamb.
I take it players like Eno Benjamin or D’Onta Foreman are long gone from your waiver wire by now. But check what players are still there. Going into the second half of the season with only Swift, Henderson and Brian Robinson can work out, but it is quite risky.
If you’re 3-4, I’d consider taking that risk, though.