Is this normal?

Just finished a game where i got carried, i was disconnected for some reason in the beginning for 2 levels then i came back and just played normal, but it looked like my bot and top lane completely destroyed the enemy and they carried me for the game.

I understand i got carried, but i didn't do bad at all right? i only died once and i did decent dmg during teamfights.

but why did i only get 11 lp?

I had never gotten this little lp from a win in ranked game, how is it possible? does it mean anything? does it indicate something bad?

i am very worried that my other games will also only gain me this little lp and i will have very hard time climbing.