@Mehwish_K I’m a Cricut user (got a good deal on my Explore Air and needed to learn it for my customers), but like you, I’m definitely underwhelmed by software designed to encourage people to create exclusively from designs in Cricut’s subscription font and image library, as opposed to designing themselves (or licensing fonts and images from the many designers in the DesignBundles/FontBundles community).
Cricut has updated Design Space to support offline use (if you’ve previously saved your project for offline), but it’s still the basic assumption that you’re a Cricut Access subscriber designing from their libraries.
I usually design in either Illustrator or Inkspace, save my designs in .svg format, and import into Design Space.
@Rubi_M: If you’re set on Cricut machines (and they’re good machines; the only issue many of us have is that we have to do a three-step process of designing, importing, and re-sizing), here’s my take:
If you’re just doing labels, you might prefer the Cricut Joy: it’s smaller, and it has Smart Labels which don’t require a mat. It will also do long borders (longer than 24") in a single cut. That said, it won’t cut anything wider than 4.5"
As @JordynAlisonDesigns stated, if you don’t need to cut specialty materials (quilting fabrics, balsa wood, etc.) or do any of the special functions of the Maker (score heavy cardstock; etch aluminum plates; cut perforated or wavy lines automatically), then the Explore Air 2 will do the job just fine.