Noob here with a few question!

Hey everyone!

I bought eth a few months ago for 600$ that I saved. I keep them in my Ledger wallet my friend told me to buy so my crypto will be safe. I have a few dumb questions and it would be awesome if you guys can help me:

1)can I invest/loan eth? I know you can loan USDT but I gain more money just holding to my eth without all the fees.

2)sounds kinda weird but I saw a Youtube video of someone showing a eth based site that let people buy and sell crypto for you and they get % of gains. You also have on that site the "main site bot" that does that for you for even less. Someone knows what I am talking about? All I remmber is this and when you scroll down a bit you see all the traders and you can Press to see what they are investing in and notes. I remmber the name of the site starts with de and you have 3 some where.

Thanks for the help! And sorry for my English its not my main language.