The vast majority of martingale/grid grid systems, or variations of are destined to blow up accounts (or result in unrecoverable drawdown). New traders may not be aware of these gambling methods, which require a near infinite source of funds to pull off.
How to spot a martingale/grid system
1) Short account life.
2) Unrealistic equity curves that only ever go up (unless they blow up!).
3) Equity will have significant areas of drawdown if the account hasn't blown up.
4) Increasing position sizes as the account gets further into drawdown.
Be wary of these systems, they look great until they aren't. This is a form of time-based gambling. (an very small minority of scenarios may be an exception).
Example equity curve attached.
Mottos are corny. Just find an edge, test it rigorously and trade it.