I saw in some comments some people dissapointed or saying poloniex is scam, what do you think?
I used to trade on that exchange in 2018 and it wasn't a scam exchange at all. I kept a few dollars in that exchange for 3 years and none of my funds were affected in any way, I withdrawn those in 2021 without any issues.
From my own experience with that exchange, I can say that it's a reliable exchange. However, I must tell you that I had around $100 which isn't a huge amount by any means but if they didn't interfere with $100 then I'm sure they won't do with $1000 either.