Best way to upgrade base?

Hi everyone. I recently returned to the game and noticed that the pace of development has increased significantly. There is a constant shortage of resources for construction and heroes. How do you deal with the shortage? I am interested in Last War recharge to speed up the process, but I want to find an option with reasonable prices. I would be grateful if you could share your own experience on where it is safest to buy packs right now so as not to overpay.