MechaSenpai16 it all depends on a few factors; budget, space, immersion and goals.
Depending on your budget, you can go for any entry level wheel up to the most expensive direct drive wheel you can find on the market.
As far as space is concerned, some of us have a dedicated room setup for gaming and sim-racing. Some of us do not. This you will need to dtermine for yourself.
Immersion can go a number of routes form multiple monitor setups to VR headsets. Again, space and budget will play a role here.
As far as goals are concerned, some people find true enjoyment just with the PS4 controller. However some others want a "race" setup as they may be practicing for or wanting to get into real racing.
This is just a few examples and there are many others out there. We cannot give you a definitive answer to your question. You will have to try and find what works for you and your current situation. One other suggestion, if it's possible, is to find other friends who are also into sim-racing who currently have full rigs and wheel setups and take those for a spin.
Keith.