SEO ranking difficulty faced, please clarify!

I had targetted a keyword - "e-commerce store builder" for a relevant blog. I ranked 29th position on Google at the start of July, the rank had dropped to 62 last week. So, I performed an on-page seo such as meta optim, title tag, image alt tag, & use of h1 & h2 tags. Now, when I search for the page on Google, it is nowhere to be seen. I check this manually.
I also use SEMrush, so when I inspected it's ranking, it showed 21 places increase, even google search console shows it has been in the 62nd position.

Can you please help me here, I have no clue whats happening?

use off page SEO techniques to get ranking.

heigh quilty content , your compitition are competing aginst you .

most website need 1 article fresh a day and everyday to keep up .

have you been adding content?

a website only grow when it being looked ather daily and content is added regularly.

if not does what you said drops in rank , can even drop in pages aswell be warned.

please audit your compitition and then apply seo to out beat the comp.

your very lucky , most people are finding it hard to just get ranked in google .

know the time to take the website more serious and keep up with it and battle the compitition.

good luck.

so u wanna know why u cant see your website on kw when you search? If yes then may be you are searching in wrong Google tld. Also check personalization etc