[Toymeister]

It is your washer suspension. Almost all new washers use this new system the tub is held in place by four springs on long wires from the top of the machine to the bottom of the tub

It is not held in place from below.

This new system while inexpensive, is prone to shaking. It is physics, the unbalanced load is far from the springs. I would contact a appliance repairman for replacement of suspension parts.

Ideally purchase a speed queen next time. They use the heavier duty suspension which attaches to the transmission. Almost all newer machines do not have a transmission instead they use electronics to reverse the dc motor which is cheaper to do.