I believe this is Your Ancestor is Online
An introvert who has played an online game 100 times is so close to beating it but never can! But what's this? Restricted mode unlocked? A cheat menu?! After creating his new character with max cheat stats and assuming it'll be an easy win, the main character gets isekai'd into the world of the game- as the previously-dead ancestor of a sect. Unfortunately for him, he's not as OP as the 'cheats' insinuated, so don't expect a dime-a-dozen trashy, instant 'I am GOD' manhua here.
"I didn't sign up to be isekai'd!" "Well, you should've read the fine print in the user agreement, lol." "But I'm just a normal guy!" "Don't sweat the small details, earthman."
The scene where he is shot after coming out of the sarcophagus
