Yes it is possible and you can do so. You can either make a physical spring which will add up more complexities in your model or ideally one can also make use of elastic support but problem here is that the grounded node of the elastic support initially is by default taken on the node on which elastic support is defined. Therefore, one can’t use it exactly as a properly defined spring. But you can have a look at this project where elastic support is used to mimic the spring behavior: FEA of Pneumatic Actuator with Spring & Elastic Support
Here spring is replaced by elastic support. More on elastic support you can read here: Elastic support
I think you can initially make use of elastic support to mimic your spring behavior.
It was done in Paraview locally but now can be done also in online post-processor. As an initial post-processing guide, please see here: FEA post-processing guide (using online post-processor and local Paraview)
First you need to start with a smaller model. Take a simple example and once succeeded with it than try to add more complexities. Whenever you deal with meshing, try to simply your model as much as possible. If you have similar materials for different assembly parts firmly connected to each other, try to merge them before upload to decrease effort in defining the bonded contacts. It will also in turn make your simulation faster. In current model case of yours such similar problems exist. Specially the threading on one of your part which you must remove because it’s always hard to mesh such faces.
Hope this helps.
Best,
Ahmed