Hey @MadaraUchiha ,
Some of the useful and effective apps to optimize the conversions of the store:
Oberlo- Help to source a supplier.
AiTrillion- All in one Shopify app with all essential marketing features to scale your business and can save 96% of your monthly shopify app billing. (For Email marketing automation, loyalty reward program, reviews, referral program, affiliate marketing, web push notifications, LiveChat, Announcement Bar, Trust Badges, Report & Analytics, Shopify POS & many more).
Form Builder- Create a form on your site.
Instagram Feed- To enhance social media presence and social media conversions.