Pick a new coin with low difficulty and higher rewards. Don't look out for a coin which you can instantly sell, it wont give you any profit.
Just an example: Mine a coin like PepeGold (PEPGD) since its low on difficulty and reward per block is 50.
More info on solo mining or joining a pool here:
https://bitcointalk.org/index.php?topic=3045622.0Mine and hold to get sufficient profit. Select more similar coins and get most out of your setup. Good luck.