c/r is ok as long as you realize you're turning your hand into a bluff. it doesn't matter that you have 44. i'd much rather have KQ (and trust me, there's nothing more fun than turning a Q and stacking TT) because it can improve. unless he's loose/passive and will call with A high or a draw, and then check it down, 44 is among the very worst hands you can have here
it's not a great flop to c/r because of all the draws present. he'll put you on a draw much more quickly than he'll put you on trips, so you might get floated. but i don't think your typical nl100 player will mess with you too much if he missed, so it's fine since he's very unlikely to have hit the flop.
as you move up though, i'd stay away from flops like this. aggressive players won't hesitate to float or 3-bet you. no shame in c/f as your hand is very mediocre equity-wise because of counterfeit cards. c/c is ok vs straightforward people and i'll sometimes c/c, then c/r vs someone who 2 barrels a lot
i made a ><
))*> call vs a raise with 44 on a similar board the other day and turned a 4 vs AA. [censored] like that makes you love nl