A few things can cause slow 5G speeds like that.
You could try switching your network mode to LTE and run another speed test. Sometimes LTE can actually be faster than 5G depending on signal conditions.
Also, some bands used for 5G may not be fully compatible with certain phone models, which can affect speeds.
If you're indoors or in a crowded area, that can also affect speeds even if your phone still shows 5G.
Another good test is trying a speed test outside or in a different location to see if the speeds improve.
If you don’t mind sharing, what phone model are you using?
Also how many bars do you see you could have weak coverage
