5G is a serious marketing scam, it doesn't exist, it doesn't reach, it drains your battery, and the area where it shines is downloading hundreds of MBs or GBs which is useless since you data plan is capped. This technology exists in "theory".
If you're outside in a core downtown area, with no trees, no rain, and no signs, you'll get mmwave and can stream your 4k video on to your 6" screen. Otherwise, 5G is far more about network congestion and massive numbers of devices than individual device performance. For that it's worth it (wifi6 is the same deal), but not as a 'must have feature'. Meaning, I won't buy a new device without both, but neither one is an 'upgrade now' level feature.