5 Ways to Increase Sales by 30% 
Without Increasing your Ad Spend
1. Use an ecommerce landing page if you are driving paid traffic (Google Ads, Facebook Ads, Youtube Ads, etc.)

    The average ecommerce conversion rate is 2.87% but if you can increase that to almost 5% if you use a -ecommerce landing page.

    You are losing money if you are driving traffic to your website since it has many call to actions and distractions.
2. Use an app like stamped.io ,  or https://loox.app/. to generate user generated reviews. Social proof is crucial to increase sales. In a marketing survey, 85% of customers actually trust local online reviews as much as personal recommendations, and significantly more than marketing materials.
In addition, you can use this ratings and integrate them to appear in google shopping product review.
3. Increase page speed by using this free tool. https://gtmetrix.com/ Fast loading time means more sales for you. According to Cloudflare, pages that loaded in 2.4 seconds had a 1.9% conversion rate.
   At 3.3 seconds, conversion rate was 1.5%
   At 4.2 seconds, conversion rate was less than 1%
   At 5.7+ seconds, conversion rate was 0.6%

4. Put your phone number on the topmost portion of your website so they can easily see it. It sounds like a trivial thing but most customers would like to have an option to call you so it does not mean they will call you but this increases trust because they know they can call you if they need something.
5. Put Product reviews of your customers. Yes, it's harder to fake video testimonials than written testimonials.
According to VWO, a recent study by the fashion industry experienced a 134% increase in conversions by including review videos on their product pages.