I tried other answers but all of them getting error on browser console, so i found the closest thing to what i wanted and without getting any error:

^[A-Z][a-zA-Z0-9~`\!@#\$%\^&\*\(\)_\+\-=\[\]\\\{\}\|;':\,\.\/<>\?]*( (?! )[a-zA-Z0-9~`\!@#\$%\^&\*\(\)_\+\-=\[\]\\\{\}\|;':\,\.\/<>\?]*)*$

The only thing i exclude was "