How to structure a MediaWiki and Cargo query in Visual Basic - mediawiki

Question

I'm trying to pull some specific data from a wiki site; pcgamingwiki.
I would like to pull the save game data path from the site but I'm not understanding how to make the request properly. I also wanna state I'm not very knowledgeable about Visual Basic or even using C#, I did some VB back 5+ years ago and I remember bits a pieces.
What I want my app to do is using the steam game ID to search PCGamingWiki for the relevant game page ID, and then parse the save game location path of that game on that page.
I am using WikiClientLibrary with the Cargo extension support too.
This is the Visual Basic code that I have:
Async Sub main2()
Dim client As New WikiClientLibrary.Client.WikiClient()
Dim site As New WikiClientLibrary.Sites.WikiSite(client, "https://pcgamingwiki.com/w/api.php?")
Await site.Initialization
Dim page = New WikiClientLibrary.Pages.WikiPage(site, 3098)
Await page.RefreshAsync(WikiClientLibrary.Pages.PageQueryOptions.FetchContent)
RichTextBox1.AppendText(site.SiteInfo.SiteName)
RichTextBox1.AppendText(page.Content.Substring(0, 10000))
End Sub
And this Cargo query that gets the page ID from the Steam app ID
https://www.pcgamingwiki.com/w/api.php?action=cargoquery&tables=Infobox_game&fields=Infobox_game._pageID%3DPageID%2CInfobox_game.Steam_AppID&where=Infobox_game.Steam_AppID%20HOLDS%20"21000"&format=jsonfm
This is getting me the page information but I know there is a better way of getting the info.
Doing a wiki query for the sections gives me
{
"toclevel": 2,
"level": "3",
"line": "Save game data location",
"number": "3.2",
"index": "6",
"fromtitle": "Lego_Batman:_The_Videogame",
"byteoffset": 5842,
"anchor": "Save_game_data_location"
}
But the issue is that from what I could find is that I can only use the fromtitle and the index to get this information but on a different game page the fromtitle is different as it is the game name and the index changes as the content can be placed different on the page depending on the game.
I was hoping that I could use "number" as it seems they all are "3.2" or "anchor" as they all have "save_game_data_location" but I can't see how I could search by these identifiers. PCGamingWiki uses the Cargo extension but I'm not sure how I could make the right queries in visual basic to get the information I need or if there is another way of getting this content.
This is what the content on the page looks like
I'm just not sure how I convert the normal API queries cleanly and that Cargo query into Visual Basic code so any advice would be appreciated.