The Martingale system is well known and it's doubling the bet (lot size) on loss. The goal is to win the amount of money of the initial bet:

Bet Win/Loss Profit Cumulative Profit
1 Loss -10 -10
2 Loss -20 -30
4 Loss -40 -70
8 Loss -80 -150
16 Loss -160 -310
32 Win +320 +10
As you can see, the size of the bets increases exponentionally with each loss.

The opposite of Martingale is Anti-Martingale, aka Paroli. In this case you would double the lot size when you win and reset it when you lose. You also need to reset the system after certain amount of wins, otherwise you would only lose.

You hame multiple options, so you can set up different variety of systems similar to Martingale or Paroli.

This money management method allows you to restart your expert advisor without losing information about its current state.