Topics -- like words and concepts -- can be related to one another either by means of taxonomies or partonymies. The first one is based on categorisation, giving us topic, sub-topic, sub-sub-topic. The key relationship is 'IS A (KIND OF)". As for the latter, the relationship is "HAS A" or its converse "IS A PART OF", meaning a constituent part, a component. To give an example, a banana "IS A" fruit and the banana "HAS A" skin. Since words (topics) are open to multiple categorisations, there will be overlaps. For example, an apple is both a fruit and a snack. Networks like these will help you to think through which aspects of a topic to elaborate, which sub-topics require more specification.
Are you talking about a journal paper versus a conference presentation?
Maybe you have more data, or can perform more sophisticated analysis on the data you have. Maybe you could expand your discussion with additional dimensions of analysis.
A brief statement in plain language after each report of specific data is OK in the Findings.
But the purpose of the Discussion is to show how the present study fits in with other past studies and to attempt to explain the "why" of the findings. The discussion should also specifically answer each research question in plain language, and include recommendations for how researchers and practitioners can USE the results.
The more prestigious the journal, the more import it is to have a rich discussion, not just short, superficial thoughts.