It’s all broker-sponsored propaganda. Here’s BabyPips on “Reward-to-Risk”:
If you give yourself a 3:1 reward-to-risk ratio, you have a significantly greater chance of ending up profitable in the long run.
https://www.babypips.com/learn/forex/reward-to-risk-ratio
It’s messed up telling new traders you’ll have a significantly greater chance of profitability in the long run when statistically… especially in the long run… it’s impossible.