Nat type D on personal hotspot

There isn't a fix because NAT is carrier grade on cellular. You're stuck with whatever NAT type you have now.

Cellular data is not ideal for online gaming. You'll need a wired broadband connection.

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@Dxk101 wrote:
No, this is if I’m on the go. I want to use my personal hotspot to play

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Like David said.   Your hotspot is a cellular device.  

Not going to happen and the solution is ultimately going to be "vote with your wallet"

Which means if a policy isn't acceptable everyone has the choice of who provides their wireless service. If you're expecting parity among a competitor I would consider altering expectations. A wireless cellular network is a closed, private entity and the carrier can decide how they want to implement assignment of IP addresses, NAT, backhaul routing, etc, etc.

I understand the frustration but realistically there isn't going to be parity with Verizon and AT&T is also a company that provides wired home internet service. It's a business at the end of the day and unlike landline telephones service it's not a utility. The only way to truly enact any kind of change would be to express displeasure by choosing a competitor that fits your needs. If it were something that caused a huge exodus of users then maybe it would get noticed.