@leonix007 I doubt whether the OP really doesn't know about the mining of altcoins, why OP doesn't use the search function on this forum or can use google. but I want to be like you think positively about OP and share knowledge with OP even though I am not an expert here.

If you talk about profit, there are a number of things that can influence such as:
1. Hardware specifications
If only using a CPU, processor specifications are very important to determine your hashrate . If you use a Mining Rig (GPUs), the type and series of GPUs determine the hashrate

2. which coin do you want to mined
You must pay attention to the Network hashrate and Difficulty of the coin. this is directly proportional to the hashrate generated by your mining device.

3. Pool

4. Electricity and Internet costs in your country