Hashing24 has stocks for Bitcoin Mining

Hashing24 has stocks from 34$. But due to the bitcoin price bitcoin mining profitability dropped so much. When I started cloud mining in May 2017 100 gh bitcoin mining for lifetime contract paid 0.00003884 btc but in that time period pament dropped to 0.00000388 btc because of difficulty level increase.
Approximately every two weeks bitcoin network counts its Network comuter power and adjust itself for creating new block. This caller as bitcoin difficulty increase.Every 10 minutes Network computers are rewarded 12.5 btc in every block creation.And also bitcoin network keep track of btc transactions like an accountant.This process calls as bitcoin mining.
At the beginning bitcoin mining was not so profitable but it was easy you can mine lot of bitcoin because difficulty was so low.But nowadays Bitcoin hashrate difficulty increase so much and that coused use of super powerfull machines.
There is a option on Hashing24 you can join auction and buy hashrate from other investors with the chance of finding lifetime contracts. Because Hashing24 now only offers 3 year contract.
This so risky area so never invest money that you can not afford or get dept or bank loan.