Three hundred reviews is too many to read carefully and too few to hand to a data team. It is exactly the size where a frequency count earns its keep.
Running it
Paste the review text, strip stop words, and count. The ranked output shows which words customers reach for repeatedly — and those words are the vocabulary your landing page should be using.
The interesting result is usually a surprise
A software company expects features and interface at the top. The actual top terms are support, quickly and refund. That is a finding: customers are talking about the service experience, not the product, and the page selling on features is answering a question nobody asked.
Where frequency misleads
Counting cannot tell praise from complaint. support at the top might mean support is excellent or unbearable. Use the count to find what people talk about, then read a sample of those specific reviews to learn what they are saying about it.
Try it: Word Frequency Counter on SeoWolf's Notepad.