Apple Watch still has activation lock from previous owner

Sure. No, that is not normal. It sounds like the charger is not making good contact with the Watch. Make sure the back of the watch is clean, and for the charging puck, make sure there is no plastic on the part that would contact the Watch. See the information in this support document, If your Apple Watch won't charge or it won't turn on - Apple Support

Contact the seller and ask them to follow all these steps;

What to do before you sell, give away or trade in your Apple Watch, or buy one from someone else – Apple Support

Just for your information, a factory reset on the Watch will not remove Activation Lock. The same for Activation Lock on the iPhone or iPad as well. Activation Lock can only be removed by the owner that put it on there.

I have checked the plastic and there is nothing on the charger maybe I should clean the back of the watch

and another question when I press and hold the side button and the dial the watch doesn’t come up with the apple logo at all

what should I do?

Well, it would seem it probably isn't charged well. You can try a reset of the watch, hold the digital crown and the power button together until you see the Apple logo and release. Other than that, it would require Apple Support.

Then there is nothing that you can do about the Watch except to file a claim with eBay for a refund. You will not be able to activate the Watch.

cant you do a factory reset

Oh ok

sorry I just thought I’d help

No problem. We can always use help, but I just wanted to make sure that you knew that a reset would not affect Activation Lock.

Cool

do You think you could help me

so my Apple Watch has been doing funny things so when I put it on charge it flashes the green snake, is that normal?

You're welcome.