Apple Watch locked and I don’t have access to the last iphone
Trying to pair my apple watch that I got from someone a while ago and I don’t have contact with him or the other iPhone.
Sorry, but only the previous owner can disable the Activation Lock for the Apple Watch, which can also be done via the iCloud Account over the Web:
About Activation Lock on your Apple Watch - Apple Support
Unless you have proof of purchase or ownership, as explained in this related article, the official Apple Support can not disable the Activation Lock:
Additional Support - Activation Lock