This is really good! I think the only major change is that you might want to make is: My husband has many hats to wear. (Or, "My husband wears many hats") . A more minor change may be that you could remove "at work" and just say manager. We typically don't think about managers outside the context of work, so "at work" may sound a little wordy. Otherwise, I think these sentences effectively communicate the challenges of balancing many responsibilities. Does your husband have any outlets which ease the struggles of responsibility?

I would use the first sentence - it's much more natural than the second. For example, you write ".. that you don't have any experience about it before?" Typically, we don't have experience about things, but we have experiences with things. You might say "Do you have experience with fishing?" or even "Do you have experience fishing". One might also say "I have fishing experience". If you wanted to use the last sentence, it would read "How are you going to do such a thing that you don't have any experience with?" If you made that adjustment, it would be alright to use interchangeably. You could also consider changing "such a thing" for "something". (How are you going to do something without prior experience?")

So if you are watching something with episodes, you should call it a television show, or television series. It's not often that movies have episodes, except for special cases (like the Star Wars franchise). So, your first sentence might be rewritten as: "I'm currently watching a television show." The second sentence "It's not too violent and brutal" is mostly alright, I would only change the "and" to "or". "It's not too violent or brutal." In your third sentence, it may sound more natural if you split it into two sentences. "The plot in every episode seems to be similar. Something bad happens and a detective solves the case with the help of a mystery guy, but sometimes it can be boring." If I were to rephrase this in my own words it would be similar to: "I'm currently watching a television show where a detective has to solve a case after something bad happens. The detective also has the help of a mystery guy. It's not too violent or brutal, but sometimes it can be boring." Hopefully this was helpful! Good luck :)