Hi guys is there anyone knowing anything about Martingale strategy? I'm new on it and i'd like to start to use it in online roulettes. Do u think that it worth trying using it if my budget is roughly 2k£? I found this guide
https://casino.guru/roulette-scam-strategies and they say it's better not to use it; but i have friends who won real money thanks to that.
Can anyone giving me any further info about? Thanks very much

I wouldn't even think of using that strategy in any type of game. There was a thread about Martingale strategy and you can read from there different experience of different gamblers who tried to use Martingale strategy in different games. Bottom line, it didn't work. They ended up losing. Remember, it's a game of chance, no strategy can beat that or else it will be a game of strategies.
It was pointed out that this strategy can be useful not to WIN much but to make sure your playing time is longer, for example to eat up wagering requirements or to build up wager amounts for loyalty programs and I agree here.
For example, if you have enough bankroll to make 15x streaks martingale, you can set it autobet to maximum 8 times loss, and just keep using that strategy to build up your wagers. This can be to get/activate a bonus or to just build up points. If you take into account cashback it all adds up.
If you are lucky, you end up even with small profit from the bonus. If you are playing on normal luck, you can finish the bankroll, but it is sort of an investment to get higher levels or have.