Hi @Mnass welcome to Shopify community
1. Show off the products: People tend to rely on engaging visuals to help drive their purchases. Since online buyers do not have the option to experience your products in-person, it's important to draw them in with great product photos, and right now your images are of low-res and small. More on visual cues that can help make your store a better shopping experience can be read here
2. Adding product stickers/trust badges can help increase your sales by tapping into powerful psychological triggers such as scarcity, social proof, and urgency. Also having graphic and personalized stickers on products will help grab attention of customers easily and nudge them to purchase.
I hope this helps!