He'll be perfectly fine. I said this in another thread like 15 minutes ago lol. The lakers did not draft Ingram to be a day 1 contributor, nor are they structuring their offense for him to be a go to star right away. It takes time. He's thin, he's young. He's not NBA ready yet, but he still has a ton of potential, on both offense and defense (he's already shown some flashes of his defensive potential this preseason with his length and wingspan).
Don't act like you would have said "oh man, I wish we took Brown" if we had the second pick and took Ingram.