hello aaalo
The download speed also depends on the hardware your devices have build in or attached to it. It also depends on what speedtest you use.
a widely used speedtest is cnlab UX Test
The results I got on a USB 2.5Gbit/s adapter were around 1.6Gbit/s, using a 2.5Gbit/s PCIe 3×1 NIC on a workstation showed 2.3Gbit/s for the same internet connection, almost the maximum possible.