When reading online articles, I often come across sentences like "I never seen . . .", which apparently looks either "have" or "'ve" is omitted after "I".
Here are some examples.
Krisztina Gayler, who recorded this footage, described it as "unbelievable" to witness. "I never seen anything like this in person," she wrote on Facebook.
"Held the bible in his hand. I've been preaching since I was a little boy. I never seen anyone hold a bible like that," Sharpton quipped.
The New York Times
"I been here all my life and I never seen it so bad," Clarence Blunt, Ms. Blunt's father, said at supper on Saturday night in Malta.
Is it common for native speakers to omit "have", "has", "'ve" or "'s" from present perfect sentences in informal conversations?