Can someone help me with character rigging?

Hi, i need someone to help me rig my 3d model because automatic weight keeps crashing for me .If anyone has free time and willing to help me please pm me and ill send u a copy of my model.
Here are some picture of my 3d model
Front View:
Side View:

looks like a hard-surface model. automatic weights won’t work well here. just assign the weights manually in edit mode.

for example, if you have a bone named “DEF-head”, create a vertex group and give it exactly the same name. then enter edit mode, select all the vertices in the head and assign them to the DEF-head vertex group.