ranking my website in some keywords

hello every one i have a website with online store in it, i need to get in 1st page in google using legal methods only, i dont know much about SEO so i hope you guys help me out. the thing is i tried many freelancers and they take money and never saw any feedback, some of them i didnt even see 1 new backlink to my website from them, so if you not sure you can do it please dont bid details will be in PM happy bidding