1. Your query
```dataview
LIST links
FROM [[thislink]]
WHERE field1 = [[thislink]]
```
2. FROM
Why you define [[thislink]] as a source?
I’m asking this because it means that you want to obtain all pages which link to [[thislink]], in Obsidian language, all the backlinks (notes linked to “thislink” note) - the notes that appears in backlinks panel.
This would be enough to your query if these backlinks are created anywhere in your notes (working as an implicit field), in an inline field but not in yaml frontmatter.
So, if you want as a source all files linked to [[thislink]] the query only filter the notes with the link [[thislink]] outside yaml frontmatter.
3. WHERE
For your example you can do this:
WHERE contains(field1, [[thislink]])