Complete the Vessel of Hatred Campaign

If you own the expansion, finish the Vessel of Hatred campaign to Diablo 4 Items unlock Deeds of a Champion, offering around three levels of XP per deed. This exploration also increases your Renown level, which grants further bonuses.
Combine Activities

Engage in activities that contribute to cheap Diablo IV Items multiple progression tracks. For instance, participate in Whispers, which rotate across the map and often overlap with Realmwalkers and other events.
Utilizing Items and Gold Effectively
Craft and Use Elixirs
Make sure to craft XP-boosting Elixirs at the Alchemist. Combine these with Seething Opals for a potential 30%+ XP boost.