i mean small buyin are $ 0.1 $0.5 and sometime $1. Big buy in from $5 up
Take the thousand dollar buy in tournament is obviously never easy to win
Maybe i do not know how to play in small buy in tour, playing as tight as in the final table so rarely i can get prize from small tour
The real issue here is not the buyin but the player types, you are most likely to encounter. At 1$ and below there are going to be a lot of very loose players, who are typically not schooled in any way. Recreationals, fish, funplayers, whatever you want to call it. In a 5$ MTT you will still find some of these, but there will now be more TAGs (tight aggressives).
And it is easier to play on a table with many TAGs than a table with many fish. The TAG is more likely to either fold or 3-bet preflop, so there are less hands, where you need to see a flop, and when you do see a flop, its more likely to be heads up rather than multiway. If the hand proceed past the flop, the TAG will also have a somewhat more defined range, which you kind of know, what is, because you are probably a TAG yourself.
On a table full of fish you often can not effectively bluff, because for starters a lot of pots are multiway. This force you to make hands, and variance goes up, because the pots tend to be large. Maybe 3 people have limped into the pot, so rather than raising to 2,5BB you now have to make it 7BB with AQ, and you still end up with 4 callers. You miss the flop, and with so many people in the hand the only option left is to check-fold.
Or you actually get it heads up, but then the fish fire a big donk bet into your face, and since you missed, you cant really do anything other than fold. Or you actually hit top pair, and the fish call your C-bet. But then on an apparently safe turn card he suddenly jam it in your face. You make a curiosity call and gets shown J6 offsuit, that turned two pair. River is a brick, and on your way out of the tournament you just have time to see him post something like "LOL goodbuy fish" in the chat.
For all these reasons it can be frustrating to play against fish, especially when you are card dead. You just sit there and watch them splash chips around in the most ridiculous way, and some of them end up with huge stacks, while you make a disciplined laydown preflop for the 19. out of 20 times. However easy is not the same as profitable. And the simple fact is, if a whole table full of TAGs sit and battle it out against each other, then they all end up losing to the rake, because they all make the same decisions in any situation give or take. So if your goal is to win in poker, you have to learn to beat games with a lot of fish in them.
And as Carl Oakley say, once you get to mid stakes MTTs (22$ and higher), you are going to find an increasing amount of players, who are also rather loose, but there are loose in a good and profitable way. These are called LAGs, and they are the most difficult of any player type to be up against. They will sometimes put you to the test for all your chips, so you cant just fold all your bluff catchers on the river, as sometimes you can against a bad TAG. LAGs will also 3-bet you more, 4-bet you more, float you more, bluffraise you more. So on a table with many LAGs, there will also be few easy pots for you to pick up.