The Lakers problem isn't AD or LeBron. Their problem is their supporting cast isn't good enough. They need to make some moves to upgrade it in order to be a title contender. They do not necessarily need star talent but they do need stronger role players.
Bigs: Jaxson Hayes, C Koloko
Forwards: R Hachimura, Knecht, C Wood, C Reddish
Guards: A Reaves, D Russell, Max Christie, Bronny
There just isn't enough talent there.
(1) Their three best perimeter players are Reaves, Knecht and D Russell. None of them are good defenders. Their only good defensive guards are M Christie and maybe Bronny who are undependable offensive threats.
(2) AD is their only good defensive big man. Neither J Hayes or C Koloko are rotation caliber players for a title contender.
(3) Rui Hachimura is their best two-way role player. Cam Reddish is mediocre. A so-so defender with bad offense. C Wood has not fit in at all.
They need to use their far off draft picks and maybe Reaves / Knecht to better configure their supporting cast. If they do that, they could become a title contender again. Not before then.