I would need more information, but my bet to improve your conversion rate would be:
1.- Improve your landing page (I see you feature a 5.6k Product I'm not sure if the gearbox maintenance status is one of your best selling tools, the same with the main banner, I'd improve it to a non static image, and something as a shoe that must show the benefit (comfort-protection) in one photo. so, somebody comfy using the the shoes while working safely.
2.- I would need to analyze your website and check if you got the tools to identify where the customers are leaving the site and what is the current bounce rate. If you are not engaging people you wont increase your conversion rate.
3.- Define which additional content you have available (or are available to make) such a "how to" or "tips for maintenance" or something else related to your business.
4.- I would showcase the products with reviews and make the reviews available to public. No reviews? no worries run a sale on a product through email marketing and make sure to obtain reviews.!
5.- Sure, set the abandoned cart strategy. Is your website doing marketing to close initiated carts?
One disclaimer from my experience. This is not something that you can do in 7-15 or 30 days, I would say this is an ongoing task. My initial thoughts are focused on building trust with potential customers.
This would be my first assignment on freelancer, so I'm willing to be fair with cost at the beginning.