I have see this in real life,but they were straights instead of flushes. One reason you see more of the same hands in hold-em is because you have more cards coming out being played. Most hold-em game have 9-10 players on one table.
I prefer sit down games but online play greatly improved my Holdem game immensely simply because you get to see 10x as many hands. It becomes reflex. Online play is different of course but discipline is hard to aquire until you play many many thousands of hands Or was for me
What I do to see a lot of hands is play solitaire hold'em with 10 hands in front of me while I watch the news or anything on tv. Then I ask myself how should each hand be played? Great fun and lots of learning.
I play poker, but just casually. Family and friends kind of stuff, not high stakes. Just high enough that people won't throw it away on some dumb hand. If each person puts $20 into the pot and we've got a half dozen or so, then people will be engaged enough to actually play, but the stakes are low enough that no one really loses anything. You'd spend more than that going out to dinner and a movie, so it's not really a loss. And I play pretty conservative in poker. It's hard to pull off a bluff if you're bluffing all the time, but if you play most of the game only betting when you really have a hand, people are much more likely to believe your bluff.