Nice and simple strategy that you can play all day is looking for patterns of 3 of the same evens to land in the last 3 spins, so 9,7,3 is red odd low X 3 !
It's not too rare to see these but they are rare depending how much you play roulette a day, more like 2 of them in a row rather than 3, but if you see 3 then it's rare and doesn't seem to do it again meaning the streak of the same 1/1s in a row goes ice cold very very very fast if not straight away.
When i see some like 28,26,22 i'd bet 1chip on each red low odds and treat them like separate bets, so if one loses and 2 wins then keep betting the opposite of the last spin and martingale(or whatever progression you want) on the losing ones.
Note: Don't just bet against the 1st 3 in a row, keep betting opposite of every spin there after.
Hope this makes sense