Instead of risky "free better download" sites, use:
Most font distributors package the entire family. Here is how to extract only the Roman Bold version:
Weights & styles in family: Multiple weights from Thin to Black; Roman Bold corresponds to the Bold weight in the family (commonly 700). Italic styles are not part of the original Montserrat release; oblique variants may be auto-generated by apps.
Design characteristics:
Optical/readability: Good for headlines, UI, branding, and short blocks of text; can feel tight for long-form reading due to geometric shapes and high x-height. Works well at display sizes and in web/UI contexts.
Technical features:
File sizes & performance: Regular Bold TTF/OTF is typically small (tens to a few hundred KB); variable-font packages can be larger but reduce the need for serving multiple static files.
Compatibility: Broad support across modern browsers and operating systems; works in common design apps (Figma, Sketch, Adobe suite).
Accessibility: High contrast and clear letterforms improve legibility; for long text consider pairing with a humanist or serif text face for readability.
Recommended use cases
Where to download (free)
If you want, I can:
(Invoking related search term suggestions.)