It’s a good idea to get some extra help to protect your house. There are two options:
An Iron Golem. You summon it by making a little T with iron blocks and then adding a carved pumpkin or a jack o’ lantern on top (the pumpkin must be last). They are very powerful and also quite durable.
A Snow Golem. Stack two snow blocks and put a pumpkin on top to summon it. However, it needs to be in a suitable biome (like the snow), or it will melt.