The second sentence sounds correct and natural. As for the first, it's technically correct, but only in a very specific way (you wanted to cook something to the point of being well done, but it isn't there yet). It would sound more natural to say "that just doesn't look thoroughly cooked to me" or "that just doesn't look well done to me" (though again, this second sentence applies mainly if you want something cooked to a specific level of done-ness).

Using the examples you gave, what about something like this: I really want to go, but I just can't be bothered. 我很想去，但是太麻烦了。 I want to help, but I just can't be bothered. 我想帮助，可是太麻烦了。 I think 麻烦 conveys the fact that doing something is enough of a hassle that you don't want to do it, but it could be stronger in meaning than what you're aiming for. (And my grammar may be incorrect!)

Business

I´m trying to improve my English because the company that I represent wants to develop our business in other countries, and I think English is the most important language in the business world.

A Wild Sheep Chase

I haven’t logged in italki these days. I’m still staying in Long Island and struggling to learn English, although I’m not sure whether I’m making improvements or making no progress. Recently, I like to listen to audio books on the bed. I listen to “A Wild Sheep Chase, ” which is written by Haruki Murakami. It is definitely a masterpiece. I really like the story. This book can be recommended to people who would like to start reading Haruki Murakami. However, the words in this novel are a little difficult for me. Usually I fall asleep before I know it when I’m listening to the story. For now it’s functioning just as a lullaby...