A landing page should make its offer and next step clear to the intended visitor. Start by writing down the question the page is supposed to answer.
Ask someone unfamiliar with the page to read the first screen. Have them explain what is offered, who it is for and what the main button will do. Note the phrases they misunderstood and check whether any essential detail appears only much farther down.
Change the most confusing line first and repeat the exercise. Pair the feedback with one measurable action, such as completed enquiries, so the team can see whether clearer copy helped.