I liked it a lot, because it made more sense than English (or so I thought).

I learned Latin in middle school, but I wasn't any good at it (and, I wasn't very interested either).

Still, German and Latin are built similarly :, verbs are always are at the end of the sentence and every word has their very own place.

What I'm trying to say it'ss that there's logic in German and Latin, whenreas in French, I feel we only have rules.

I didn't do it in Latin, so it didn't stayick much.

I worked harder for German, but as I already said, my high school was a very bad one and I learned nothing in it.

I even failed my A-Levels and had to take them again, but this time I begged my parents for a distancet education ansd had a lovely eight months with the CNED.

It's eEach time it’s another adventure, full of surprises and discoveries.

I learned Latin in middle school but I wasn't any good at it (and I wasn't very interested either).

The reason why I deleted the 'at it' portion is because it made your sentence sound a bit like 'high English'. The tone of the rest of your text is very casual. So to match the rest, you can say 'I wasn't any good' or 'I wasn't good at it'.

Still, German and Latin are builtstructured similarly : verbs always are at the end of the sentence and every word has their very own place.

This may just be an oddity from my part of the world(US), so I'll mark it as stylistic. I understand what you mean. But the phrase 'built similarly' is mostly used when talking about things that are tangible or when talking about structure of things. It's uncommon for me to hear it being used to apply languages.

What I'm trying to say it's there's logic in German and Latin, whenreas in French I feel we only have rules.

Every word in Latin is declfined in relevance withto their role in the sentence, like if they arexample verbs, complements, subjects, etc.

You have a good grasp of the language so I'll nitpick a little to help improve your fluency: I think defined is the word you were looking for. Secondly, I used the word 'example' in place of 'like if they are' because that is the correct word to describe what follows. 'Like if they are' is passable in spoken English but it translates poorly to written because it sounds like a clause which should be followed by something else.

I didn't do it in Latin so it didoesn't stay much.

To be honest, I'm not sure what you wanted to say here but "didn't stay much" does not make sense in this context

I worked harder for German but as I already said, my high school was a very bad one and I learned nothing in it.

I even failed my A-Levels and had to take them again, but this time I begged my parents for distance education ansd had a lovely eight months with the CNED.

It's eEach time it's another adventure, full of surprises and discoveries.