Many people walked away from slots because they keep losing and losing over again, I have two friends that quit slots and focus on sport bets only, I guess they want that win not too far away, unlike myself that don't care much because I have free little amounts to spare.
Free little amounts to spare sounds vague, I hope you are budgeting the amount to spend or very soon those small amounts will add up to be a big amount enough for a weeks meals.
Those people are not wrong to walk away. Slots is a game that is EV- and that means your skills will not matter at all but luck will. There will more losses in the long run than wins and hence it is better to accept that loss and move on.
For the OP, big wins may have but does not depend on the machine, unless they are rigged, which can be avoided online in provably fair games.