The gGarlic

For speaking about something in general, don't use "the."

To reference something specific, use "the." Example: Can you hand me the garlic on the table?

If your story had been about a specific piece of garlic (imagine a story about a bulb of garlic that cursed your whole family), your title might be called "The Garlic"

Garlic is an ingredient used in almost every dishes.

A word following "every" will be singular

A Danish chef once said that it's very usefull for being because it is versatile, so; you can use it easily in many different types of dishes, and it has also has health benefits.

Edited to be more natural

The gGarlic was spreaded in throughout Europe by the Roman Empire more than a thousand years ago.

The past tense of "spread" is also "spread" :)

"Throughout" is nice to use here because it is a more descriptive way to say that the Romans spread the garlic everywhere / in far-reaching places

But, it wasn't only an/just a cooking ingredient, it was also used as a medicine against cancer, the plague, orand respiratory ailments.

It was also used in another civilisations, for example, I think in Egypt, it was used (as an aphrodisiac / to cause sexual desire or lust).

I would write "civilisations" plural as to not be limiting. Something ingested to cause sexual desire/lust = an aphrodisiac, if you want to be concise

However, in othercertain religions, like in the Buddhaism one, people don't eat it.

We haven't mentioned any religion yet, so we don't say "other" here.

ThOne reasons of that is that uprooting the gasty a being that harvesting garlic can have negative effects on the soil ecosystem and has bad effects.

I wasn't sure to understand, hopefully this is what you mean

The secondAnother reason is that these people think eating gastyrlic provockes sexual desire, violence and aggression.

Talking about a specific group of people (Buddhists), "these" people

Nowadays, somecertain health benefits arehave been proovedn, like lowering the blood pressure orand improving the gut functioninggut health.

Specific health benefits = certain health benefits (which you go on to name)

Personally, I don't really appreciate it, but as I am not aI don't cooker,, so I think I'm less able to understand how important it is in thefor dishes.

You don't cook = you don't cook at home
You are not a chef = you don't cook professionally (in a restaurant)

Please tell me how you find my English and feel free to give me advice!

This is fine, but seeing as you are at the end of your text, past tense "found" is more fitting

Garlic is an ingredient used in almost every dishes.

A Danish chef said that it's very usefull for being versatile, so you can use it easily in different types of dishes, and it has also health benefits.

The gGarlic spreaded in Europe by the Roman Empire more than a thousand years ago.

But, it wasn't only an ingredient, it was also used as a medicine against cancer, the plague, or respiratory ailments.

It was also used in another civiliszation, I think in Egypt,s to cause sexual desire or lust.

However, in other religions like in the Budhaism one, people don't eat it.

The reasons of that is that uprooting the gasty affects the soil ecosystem and has bad effects.Nonsense

The second reason is that people think eating gastyrlic (??) provockes sexual desire, violence and agression.

Nowadays, some health benefits arehave been proovedn like lowering the blood pressure or improving the gut functioning.

Personally, I don't really appreciate it but as I am not a cooker, I think I'm less able to understand how important it is in the dishes.

The gGarlic

Garlic is an ingredient used in almost every dishes.

A Danish chef said that it's very usefull for being versatile, so you can use it easily in different types of dishes, and it has also has health benefits.

The gGarlic was spreaded in across Europe by the Roman Empire more than a thousand years ago.

There are many word in English where the past tense of the word is the same as the present tense. "spread" is one of those special cases. I'm sorry that English isn't more consistent.

But, it wasn't only an ingredient, it was also used as a medicine againstto cure cancer, the plague, or respiratory ailments.

However, in other religions, like in the Buddhaism one, people don't eat it.

The reasons of that is that uprooting the gastyrlic affects the soil ecosystem and has bad effects.

I'm not sure if you had some kind of auto-correct issue, or something else, but "gasty" is not an English word.

The second reason is that people think eating gastyrlic provockes sexual desire, violence and aggression.

Nowadays, some health benefits arehave been proovedn, like lowering the blood pressure or improving the gut functionings.

Personally, I don't really appreciate it but as I am not adon't really cooker,. I think I'm less able to understand how important it is in the dishes.

I don't think I've heard "cooker" used before (at least in American English), a few other ways to say it might be:
"I don't really appreciate it as I'm not much of a cook" (though I've often heard this, "cook" makes me think of a professional cook at a restaurant, instead of someone who cooks food for themselves.)
"I don't appreciate it much as I don't really cook" (This get's rid of the redundancy of "really")
"I don't appreciate it much as I don't cook" (This means that you don't cook at all)

Thanks for reading my writing and correcting me!