Can I break Lihzahrd Brick with any other pickaxe than Picksaw?

I'm playing on easy mode and I just found the Lihzahrd area.

Are there any pickaxe I can craft to enter that area?

Do I need to keep search for those Golems so I can get the Picksaw?

The only pickaxes that can break Lihzard Brick are the picksaw, the laser drill, and the luminite pickaxes. All of them require that you have defeated the Golem to acquire. The Golem is the boss found inside the lihzard Temple.

Plantera always drops the Temple key which opens the door to the Lihzard temple. Plantera's bulb (an object that you destroy to summon Plantera) begins to appear after you have defeated all three mechanical bosses. It shows up pink on the map.

The entrance to the temple is usually found along one of its top slopes. usually fairly near to the top. Whether it is on the right or the left is random.

Hopefully that is of some use.

No there is no pickaxe you can craft in order to get into the temple without defeating Plantera.

The Rod of Discord used to be able to be used to get in but has since been patched

However you can still enter the Jungle Temple by using the Teleporters on either side of the door.

Also you can use a Teleporter just in front of the door and then activate the other one while standing on the edge so that you materialize partway inside the door.

The other ways to get in utilize hammered blocks. Create a path leading up to the Jungle Temple door with a 2 high gap, so your head will hit the blocks you've placed. Now walk towards the door while hammering the blocks into the angle shape and you will be able to enter the Temple. See this video for a demonstration.

Once you get the mechanic you can walk through jungle temple by placing actuators on the door and linking a switch to them. Turn on the switch and walk through. Looks like it is still closed but not.