I agree! Unfortunately we currently don't have many active Korean contributors yet.

In the meantime I'd recommend the Youtube channel Easy Languages for listening practice!
Easy Korean (beginners): https://www.youtube.com/playlis...wEAscRHwg3jgy3
Korean on the Streets: https://www.youtube.com/playlis...aXVOb0af9nWuHN

You can find example sentences here with that patten using the following searches.

には子供がいます
https://tatoeba.org/en/sentence...E%E3%81%99&to=

には子供がいる
https://tatoeba.org/en/sentence...4%E3%82%8B&to=

Rough representation:
私は 子供がいる - As for me, there are children. ("I have children", emphasis on I)
私には 子供がいる - As for me, there are children. ("I have children.", stronger emphasis on I)
私の 子供 がいる (Is this what you meant?) - My children are here/exist/are present (doesn't really answer "Do you have children")

More explanation on には and は: https://www.wasabi-jpn.com/how-...in-japanese/#3

For practical reasons, if you are already introducing yourself, or it's clear that the current conversation is about you, you can simply omit the 私たちには part. You only really want to use pronouns if it's important to specify or emphasize the subject.

I'm not a native speaker or teacher but I hope this helps!
Welcome to Tatoeba!

A lo mejor algo como "Aspergo antiblatta".

Bonjour ! Pouvez-vous voir le symbole du stylo au-dessus de la phrase #12451124 (cliquez s’il vous plaît) ?

Azul.
J'ai eu vent de ton problème et j'ai demandé à Lisa si elle était en mesure de t'aider. À première vue tout semble correcte en ce qui concerne ton compte.
Peut-être quf c'est juste un problème de mise à jour.

+1

Just wanted to add that it was me who invited Thadh to Tatoeba and I can confirm that he is quite knowledgeable about Izhorians and their language. Of course it's better to have sentences under a wrong flag than to have none at all, but since an appropriate procedure is listed in https://en.wiki.tatoeba.org/articles/show/language-change-request , I hope it wouldn't be too hard to set the correct flag.