Could the loss in bot lane be because:
- You were so focussed on your lane that you forgot to help out botlane? (i.e., the reason for the steamrolling was because they did not get assistance from any other person or the help just came too late?)
- The jungler was spending so much time making sure you and top/midlane were ahead that they forgot to check out botlane?
- A certain person who was winning their lane forgot to ping "missing player" and warn the bottom.
- A certain person who was winning his lane forgot to do a map check and notice that the jungler had just passed the midlane and was heading towards dragon/bottom - even though it was warded.
(I'm a support main and I've often found it ironic when the toplaner is cursing away at the bottom, but he never could be bothered to warn other locations on the map that the jungler was coming, his lane opponent had disappeared from the lane and/or the toplaner who was way ahead in minions/kills/coin couldn't be bothered to roam/teleport to other lanes and get them ahead.)
It is a team game. Every loss is a team loss whether you like it or not.