Unfortunately you wouldn't be able make any profit at all. The best thing to do is focusing on altcoins as the others have stated above. There are some with pretty low market cap and a lot of blocks to be mined. You could try your luck there.
can you suggest some alts so ?
1. They're bullshitting you. The S9 - which is a bitcoin miner - makes good money.
2. They are right in the sense that you'll make more money if you go with an altcoin miner such as the L3+ which can mine a variety of coins.