I like to walk in the park, like and going to eat at thea restaurant.

I like to read an action and romantic book.

I play video games with my siblings and also watch a scary movie.

at theAt night, I walk with my dog in the garden.

I like to walk in the park, and I like going to eat at the restaurant.

Feel free to totally ignore this correction if this is meant to be very informal. I've simply corrected it to make it more formal.

Although, "the" before restaurant implies there is just one specific, special restaurant. But if it could be any one of a number of restaurants, I'd remove the "the" and make "restaurant" plural to say "...to eat at restaurants."

I like to read an action and a romantic book.

If you mean two different books, this is more natural. However, if the book is both action and romantic, then I'd probably say "a romantic action book."

Also, before any words which start with a vowel sound (a,e,i,o,u), "a" becomes "an" so that it is easier to say in spoken English. Saying "a action" out loud feels awkward to me.

I play video games with my siblings and also we watch a scary movie.

at theAt night, I walk with my dog in the garden.

I like to walk in the park,. I also like going to eat at thea restaurant.

I like to read a action and romantice books.

I play video games with my siblings and also watch a scary movies.

aAt the night, I walk with my dog in the garden.

I like to walk in the park, like goin to and eat at the restaurants.

I also like to read a action and romantice books.

I play video games with my siblings and also watch a scary movies.

at the nightAt night/In the evening, I walk with my dog in the garden.

It's not incorrect to say "walk with my dog", but it sounds like you and your dog are walking together in the same way people walk together. "