As Goat says try focusing more on value. That is the key & covered extensively by others on this forum with much more knowledge than me.
==> And value can be found right across the book so not restricted to fav less than 2
==> Lots more opportunities
==> No need to martingale your stakes
A good value system will attempt to max out your liability the more value is on offer & that max will be related to your bankroll / risk management approach...It has nothing to do with what happened in the last race.
But note: the more value there is to be had the harder it will be to be to get matched & conversely if the bet is negative EV there is a very good chance you will max out liability.
Euler / Peter has a very good video on value backing the fav with no restrictions other than getting a good price. Maybe track it down & it could help you a lot.
Take your money & run would be my advice.
Is little Acorns genuine or a blag!?
Fat chance of that happening at this point, it's way more fun for people to fuck around and find out for themselves

I suppose you do have to give some credit to the creator, it taps into the psychology beautifully and as a marketable product has probably been a resounding success. Even though none of it was probably ever intended as such.
But you have to be a pretty sound sleeper to sell services like this, I'd think the average person would be too embarrased to admit blowing up.
That's my only takeaway SMH