In crypto, most ways are very risky atm. Perhaps the most stable is mining, but lately the mining difficulty has made it more difficult, you must have a good knowledge of the field and a high initial investment is required.
In crypto world it is very difficult to have a stable income because crypto itself is quiet unstable and you have to find your own work for that,may need investements because there arent many jobs available online to be able to work and earn in crypto.
The only way you gonna earn in bitcoins online steady is if you have a established online bitcoin gambling site or casino.Then you can make a steady and big income in bitcoins from there otherwise you should have job in the real world for that.