My new internet provider doesn’t give me a fixed IP Address, will this stop me from being able to use Real-Debrid or IPVanish
No, you’re fine. 95% of ISP supplied IP addresses are not fixed (if you can get one, they generally cost more).
Pretty rare any ISP gives you an assigned IP Address, they’re almost completely dynamic. If you want to pay for a fixed IP address most ISPs will rent you one.
thanks for all your replies