Filling product cards of an online store

Before me was set a task - to fill the website with products from price lists, in some places there were no prices, characteristics, incorrectly spelled names, both of the products themselves and their series. The filling was done in the admin panel of the website to which I was provided access, I was required to - find the product on the internet, compare the price statistics, in order to subsequently set the price, select and add product images, fill in the table inside the admin panel with characteristics, and of course, ensure that the article text was unique if possible, all under SEO marketing and promotion.