The phrase "a bit crap and" is correct and usable in written English, though it is informal.
You can use it in casual contexts to express mild disappointment or dissatisfaction with something.
Example: "The movie was a bit crap and didn't live up to the hype."
Alternatives: "somewhat disappointing" or "a little underwhelming."
That featherweight version of You Can't Hurry Love was a bit crap and Another Day In Paradise's empathy with street people was puke inducing.
This Matthew Vaughn production is one of those cheerful Britcoms that celebrate the idea that we're a bit crap and uncool as a nation, but carry-on-regardless spirit will see us through.
We had always wanted to live by the sea, but when we did, it was a bit crap, and the dog we got turned out to be a lunatic.
Now consider the things that happened when the Shuttle turned out to be a bit crap, and then a death trap, and then a thing that had to have the International Space Station built just so it had somewhere to go.
Yes, it's technically a bit crap, and it features some less than desirable references to the special Olympics – a line presumably written by Jim Davidson – but it distills Robbie's refusal to put on a suit, do up his tie and sing the national anthem.
British Rail was crap because everything was crap, because we were also, individually and collectively, a bit crap – laughable and decrepit and doomed, like all humans have always been.
I like the idea of old-fashioned being classic, rather than brown and dingy and a bit crap; Gatiss is like that – there's something antique and quintessentially British about his work.
She had felt dizzy and nauseous, she said, and really a bit crap.
"I like that technology is so amazing now, and yet things can be pixellated and look a bit crap".
But the pacing wasn't up to his usual standard, and the funny bits were a bit crap.
And I want to cut my hair because people cut their hair in life, because it's hot in the summer having hair all down your back and sometimes your hair goes a bit crap".
