If your house has a bed in which you slept at least once without sleeping in any other beds since then, the easiest way for you to get back to your house is by jumping off a cliff in order to die and respawn at the house. You will have to enable Survival Mode temporarily if you’re currently playing in Creative Mode. This absolutely will not work if you haven’t yet slept in a bed, or if the last bed you slept in wasn’t the bed in your house. Upon respawning, you can travel back to the coordinates to claim your items.
Unfortunately, the best bet for finding your house in most circumstances will involve retracing your steps back to a recognizable landmark and then working your way over to your house from that point. Using a compass will direct you back to your initial spawn point. If your house is close to the initial spawn point, this will help you track down the house from there. This will help find your house if the other player is near it.