Start by defining what “consistent” means for your project. That might be similar white balance, contrast, saturation, color cast, orientation, crop, or an overall muted or high-contrast style. Without that target, it’s hard to edit consistently.

Because the files are JPEGs, your flexibility is limited compared with RAW, so expect some images to be harder to match than others. A practical workflow is to pick one of the weaker images in terms of color/contrast, grade it into the look you want, then use that as a reference for the rest.

In Lightroom, work through the set adjusting white balance/color temperature, contrast, saturation, and tone so the images feel related. Auto Tone/Color/Contrast can be a starting point, but manual adjustment will usually be needed. If composition varies a lot, use cropping to standardize framing or aspect ratio where possible, though composition is harder to unify after the fact.

The main limitation is that some shots may simply be too far apart in quality or color to match perfectly, especially from JPEGs. But if the source images are reasonably usable, consistent color grading and cropping can make them sit together well.