Ah, what you're saying is spelling. Syntax is word order, obligatory words, stuff like this. English syntax is a maze, or how programmers would call it, spaghetti code.

For example, here's how to ask a yes/no question in...

• Latin - attach -ne after the relevant word. (Note: Latin has no word for "yes", but still has this sort of question.)
• Spanish - why bother? Intonation is enough.
• Polish - start the sentence with "czy".
• German - shift the verb to the start of the sentence (first position).
• English - if the verb belongs to a small list of exceptions, do it as in German. However most verbs refuse this movement to the first position, so for those you need to spawn a dummy support "do", then let it steal the conjugation from the leftmost verb, and then shift that "do" instead. Noting that semantic "do" also refuses the movement, so it still requires a support "do", yielding questions like "did you do this?"

Then there's the adjective order. In Latin for example it's just a "...near the noun? Whatever, just don't be ambiguous." Polish is probably like Latin in this. English though? Quantity or number, then quality or opinion, then size, then age, then shape, then colour, then material or place of origin, then purpose or qualifier, then the noun. And don't you dare to switch them - "your famous blue raincoat" is a-OK, but *"your blue famous raincoat" makes you sound like a maniac.

A Polish colleague of mine once accidentally picked Czech in an online work training exercise and then spent the next 30 minutes giggling to himself. I asked him afterwards what was up "Czech sounds like baby talk"

That's how it always starts, then the nerds get hold of it

English syntax hard?

Yes. Sequence of tenses. It's harder than Latin. As in, what the hell does "future-in-the-past" mean?
Or tenses (+aspect+mood) in general, I guess. You guys have too many of them.

As for the orthography, you know what is to blame. The Great Vowel Shift.

English syntax hard?

Yes, it is. It has 9001 rules for the allowed order of the words, 350 for each, and you have lots of those small words with grammatical purpose that don't really convey anything, but must be there otherwise your sentence sounds broken. Refer to my examples with yes/no questions and *blue famous raincoat (instead of "famous blue raincoat").

That happens because any language is complex, there's no way around. You can dump that complexity in the word order, like English does, or dump it in different word forms, like Polish; but you won't be able to get rid of it.

There’s a lot of issues with English. Most of them are for using loanwords without phonetically changing how they’re spoken in the English alphabet.

That's something else, the spelling. It's a fair point when it comes to contrast with Polish though - sure, the ⟨z⟩ might look odd, but it is consistent, most of the time you can correctly predict how you're supposed to pronounce a word in Polish.

It's actually easier to come up with a decent orthography for a language with a small number of speakers, as it depends on getting "everyone" (more like "enough people so the opposers can be safely ignored") on the same page. Doubly true when it's a language associated with a single government, because once you get 2+ governments into the bag they tend to force distinctions where there's none.

For English there's an additional issue, the lack of any sort of regulating body like the VLKK. The natives also seem to have a weird pride against diacritics (kind of funny as English spams apostrophes, but OK, not going to judge it).

Italian is the exception that proves the rule. The orthography is well-designed (transparent, without too much fluff), but not even then it could avoid ⟨ch gh⟩ for /k g/ before ⟨e i⟩, so it could reserve ⟨c(i) g(i)⟩ for /tʃ dʒ/.

It's all related: modern European languages typically have a lot more sounds than Latin did, so Latin itself never developed letters for them. Across the Middle Ages you saw a bunch of local solutions for that, like:

• Italian - refer to the etymology to pick a digraph, then solve the /k tʃ g dʒ/ mess with ⟨h⟩.
• Occitan - spam ⟨h⟩ everywhere. (Portuguese borrowed from it.)
• English - spam ⟨h⟩ too.
• Hungarian - spam ⟨y⟩ instead.
• Polish - spam ⟨z⟩, plus a few acute accents (Polish has the retroflex series to handle too, not just the palatal/palato-alveolar like the four above)

I was kind of painting a broad stroke, but you're right - German uses mostly ⟨ch⟩ and ⟨sch⟩. Should've said "English" alone.