Search engine optimising

I am looking for someone who can bring back my website's ranking to Google 1st page again. 15/20 years ago my site (www.shoppingbagsdirect.com) used to be in Google 1st page top ranking website. suddenly I lost my ranking since last 5 years. Now I want to do a new campaign to bring back the site in Google 1st page. Depending on your charges I would like to do a monthly basis with a reasonable on going monthly cost.

If you think you can help me and Please quote me with a very competitive cost. Please not entire campaign must be white hat SEO.

Thank you and look forward to hearing from you soon.

Kind Regards
Ratan Pal