It is not easy for me to cook even though It’s been for 7 years since I hadgot married. It is not easy for me to cook even though It’s been for 7 years since I got married.

In speech at least, we always say "got married." Had married works only in a few contexts like retelling stories that happened in the past. "She was happy, because she had married 3 days earlier." Still, that's rather formal. Typical use would be "She was happy, because she had gotten married 3 days earlier."

Firstly, It’s very important to make wfood that my family, especially my daughter eat well, likes to eat. Firstly, It’s very important to make food that my family, especially my daughter, likes to eat.

So I need cook them in a way that makes them delicious. So I need cook them in a way that makes them delicious.

If you used "deliciously" (the adverb of "delicious," which is the form you need to use to describe a verb like "cook"), it makes it sounds like the way you're cooking/preparing the food tastes good rather than the food itself. It's a big rephrase here, but there's not a simple way I could think of to say what you wanted in English without making the sentence longer.

Secondly, I don’t want to usespend much time to cooking. Second, I don’t want to spend much time cooking.

Use too much time to cook was grammatically correct but not the way we'd phrase it. We "spend time" on things.

Because I only have 3.5. hours until goingeach night before I go to bed. Because I only have 3.5. hours each night before I go to bed.

For the last, this isinally, the most important the besting is that I want to know how they are spending tomy family spent the day through conversation duringat dinner. Finally, the most important thing is that I want to know how my family spent the day through conversation at dinner.