What video cards do you have and how many are there? 1-2 or more than 10?
I think that now it is more profitable to mine top coins on pools and not work with intermediaries such as Nicehash.
If you do not want to keep track of coin prices and news, then it is easier to use Nicehash.
If all goes well, I should receive an Asus GeForce RTX 3060 Dual OC 12GB GDDR6 in the next few days.
This is going to be my first serious adventure in mining. (I mean, in 2013 I did some tests to mine BTC. It was a pity it was just doing it for 3/4 months, I was getting about ~0.05btc/~15 days at the time. )
It will be just a GPU, see how to run the market and then maybe invest more.