consider placement your access point (or router if it's an AIO), better signal means better throughput
consider adding more access points, to get better signal where you work/play
if wired access points are inconvenient, use a mesh system not extenders
use devices of a higher standard - WiFi 5 AC to WiFi 6 AX
kailangan s'yempre device (laptop/mobile/etc.) at access point
obviously, the above would improve your WiFi, but not your internet connection. maski pa mag-upgrade ka to WiFi 7, kung 30 Mbps ang internet connection mo, ito pa rin ang bottleneck mo when accessing remote sites (access to your NAS, if you have one, will be better).