Some help needed

Hey guys

One of my pages was hit pretty badly for no reason apparently. From 1st page of google for Medium competition keyword to 300+ position. SERP is bouncing but even after four days I am more or less still there. I can PM you guys if you can analyze that. I have checked that there has been no recent algorithm roll out so not sure what has hit it. I have been backlinking but proper 2-3 tier one and have tried only quality links for 1st tier. And it has been on 1st page of google for a good 5-6 weeks so not sure what I did wrong or is this common behavior?

Thanks.

Please do not contact me to offer me your services! I am already using several tools myself! Thanks

Any expert willing to help

If it's a brand new site, you were in the honeymoon phase where google gives you easy rankings and traffic until everything settles into place. Continue building links and adding content until your site settles. The biggest mistake you can make right now is to stop everything all together.

First of all. There is no expert here who is going to give you a free detailed analysis. You may be able to get someone to have a look but that is about it.
I think you built links too fast. PM me details, if I have some time I will look into it.