Remove SEO errors on Opencart 2

Comprehensive content filling and promotion of the website https://www.bouwmaster.nl/en is required according to the technical specifications. The website is currently in the final stages of development and requires highly competent optimization, content filling, and promotion, in full coordination with the programmer. Please describe the results I will achieve as a result of your work (monthly) for the next 3 months and the cost of this work.

There was a SEO optimization of the website (we will discuss in more detail what exactly was done) I am looking for a person who will be engaged in promoting the website in the SEO search engine results

Purchasing links for SEO promotion of an online store, quantity to be discussed, links will be placed on products, the main page, etc.

We are looking for an SEO specialist to manage the online store stall.ua We need a turnkey promotion: internal and external SEO and geo-optimization of the website. Our link exchange account will be used. Please write the monthly promotion cost, what is included in the work, as well as successful cases.

Hello, I need an SEO analysis. More specifically, to figure out what the problem is, as the site has lost key positions and visibility. A year ago, we stopped purchasing links; prior to that, an audit was conducted, errors were fixed, and links were purchased for 8 months, but the results in positions were minimal (the report is attached). Before the promotion ☝️, the main keywords never dropped below the 3rd position. The site is old. The link to the report and the site is in the attached link https://drive.google.com/drive/folders/1PNVPCt7hg_93Kom4Nwq-GSBejl_XfoGp