help,please can you correct me this, around 1 am we went to his house, my sister was cooking gazpachos, and the rest of the brothers 5, we had to bring an aperitif and drink, I prepared a Galician octopus, I was very good I like to cook, I think I cook very well, there was a lot of food and drink. Seafood, variety of cheeses, ham, pate de ganso, lots of food. and to drink I do not lack good wine we spent a great day, but I am sure that these days I will take weight

See a translation

I'll give it a try but the patagraph needs rewording.

"At around 1pm my siblings and I went to his house (whose?). My sister was preparing gazpacho, while the rest of us brought entrees and drinks. Since I love cooking, I made Galician octupus. So, there was plenty of seafood, a variety of cheeses, ham, goose pathe, and good wines. We had a great time but I gained a couple of pounds..."

Now, in English sentences have to be a bit shorter and simpler to avoid confusion. As your English improves you can create more complex sentences but without overdoing it. Remember that one has to get the point across rather than confusing readers.
Also, use the word "siblings" to indicate brothers and sisters.
You mentioned 1am but I think that you meant 1pm because nobody eats that much food in the middle of the night, before going to bed, without ending with an indigestion. :)
Alright, I hope it helped!

You're welcome! :)