Greetings, please I need a help, I switched (changed) my blog hosting company and my Google ranking has fall to zero since then, none of my post is appearing on Google Search since then, kindly assist in some tips on fixing this issue as it's deeply affecting my website. Thanks and God bless y'all.

You changed from which host to which?

From Namecheap to Blueangel host

Server issues or errors can effect the load time of your site. But just wait for some time. See if your website will get back up. Sometimes, Google shakes up search results. Continue doing your seo exercise. If you need gov, edu and high authority websites for backlinks, contact me or WhatsApp me 07085013051

Already paid someone to build the Backlinks which I see no effect of the Backlinks on it.. I don't thinks that Backlinks building actually works

It will be difficult to know the issue with the little information u provided. A lot of things could be attributed to the loss of traffic. Perhaps it's due to an http-https change or a dns error. If you actually just dropped in rankings(instead of disappear) then it may be a Google penalty. So u see, the possibilities are vast.

Did the url change like https - >> htpp or the other way round? If yes then there will be a drop in traffic.

How did you do the transfer ? Because transfer cannot make traffic fall If the ssl certificate are okay.

Remember to do a transfer you first need to backup your WordPress installation and database then download it. Upload it again to the new hosting account alongside the database. Connecting the database like creating a database, user and granting all access and privilege to the user.
If you follow this process there won't be any changes at all, ur theme, plugin, everything same unless from your ssl which most times u need to push from other account to the new account.

So tell us more on the ssl... If you have it before or not and if you have it now or not.

Another possible reason is that you can please put down the date or month you first notice the drop if possible we can cross check if there is any Google algorithm update.

I changed host and my site traffic increased Becos of how slow the previous server was...

When changing host, make sure nothing changes in your website...ssl, url, nothing at all...

The site is using https but the person dat switched the host said that the ssl and using needs to be changed also with the new host, I did experience a breakdown for 3-4 days but the site started working again, I'm thinking of changing the site URL to know if it will help bring back the site the it's normal ranking or is there any others ways I can use to resolve this issue?
The site was previously ranked 36k in Nigeria but it has no rank in Nigeria now (It's ranking in Nigeria) suddenly disappear. I was previously using Namecheap wit de ssl den I switched to Blueangel host wit a new ssl.. De site wasn't http but htttps

BLOGSTORE:
The site is using https but the person dat switched the host said that the ssl and using needs to be changed also with the new host, I did experience a breakdown for 3-4 days but the site started working again, I'm thinking of changing the site URL to know if it will help bring back the site the it's normal ranking or is there any others ways I can use to resolve this issue?
The site was previously ranked 36k in Nigeria but it has no rank in Nigeria now (It's ranking in Nigeria) suddenly disappear. I was previously using Namecheap wit de ssl den I switched to Blueangel host wit a new ssl.. De site wasn't http but htttps

Okay. It is possible Google deindexed your site after it experienced delayed downtime. So try recrawling all your site pages with Google search console. U can still use d old version to recrawl individual pages. Also resend your sitemap. Ur rankings should gradually return after u do this