To find Blox Fruits in Roblox, start by checking under trees. Fruits can appear under any tree every two hours. Look for trees in various locations, like near Brutes at the back of the island or between two cactuses.
Next, visit the Blox Fruits Dealer. The dealer restocks random fruits every four hours, so you can purchase fruits from them. This is a reliable way to get fruits without waiting for random spawns.
Another option is to explore different islands. Fruits can spawn at specific locations, such as near the columns or towers at Marine Fortress, between Kisum Island and Fountain Island on Prison Island, near the jungle Forest Island at Colisium Island, near specific trees at Nim Island, or under a tree near the volcano at Magma Village.
Lastly, keep an eye on spawn times. Fruits spawn every hour and will despawn after 20 minutes. By keeping track of these times, you can increase your chances of finding Blox Fruits in Roblox.