Backpacker or travelling app

I try to make app concept for backpackers or traveller needs. They often to find travelmates for sharing their cost, ittenerary, plan or other sharing purpose to push their budget. so here it is.. maybe i will try to add other features like "making ittenerary" by exploring some destination in explore screen, thats why i put burger menu on top left.

Im still learning, thats why i really need your feedback guys :)
map screen inspired by @Ramotion