Solar flares are among the most powerful explosions in the solar system, releasing enormous amounts of magnetic energy within minutes. They heat the solar atmosphere, accelerate particles, and can be associated with eruptions that affect the near-Earth environment. Despite decades of observations, we still do not fully understand the physical processes that govern flare energy release and transport through the solar atmosphere, or how different layers of the atmosphere respond. In this talk, I will discuss how high-resolution observations can help us address these questions, with a particular focus on the lower solar atmosphere. I will present recent results from multiline observations obtained with the 4-meter Daniel K. Inouye Solar Telescope (DKIST). I will show how DKIST reveals remarkably fine structures within flare regions that were difficult to resolve with previous observations and discuss what these structures can tell us about the dynamics and energetics of the lower solar atmosphere during flares. Finally, I will highlight how combining DKIST with space-based observations can improve our understanding of solar flares and their evolution.