The three passages provided do not together constitute five teachings on bitachon from the Akeidat Yitzchak: Akeidat Yitzchak 17 addresses Avraham's fear that his miraculous rescues from the furnace, famine, and war had already exhausted his reward in this world, with God reassuring him that everything done for him was gratuitous and his true reward remains stored for the future — a theme adjacent to trust in God, but framed as consolation rather than a direct exposition of bitachon.
Akeidat Yitzchak 6 argues that when the purpose or value of an action is unclear, a person of free choice will simply not be motivated to act — illustrated by Yoav's careless census and the disaster of Shaul's war against Amalek — without developing this into a doctrine of bitachon.
Akeidat Yitzchak 13 addresses the yetzer hara, noting that in youth the heart is described as purely evil, whereas afterward one's mind settles and improves — a point about moral development that the passage does not connect to bitachon at all.