is there anyway to get better speeds using Wi-Fi even if it means me buying a better router would that help?.
Depends what the router and the computer specs are, if a phone or tablet less likely.
My office provides me a Lenovo laptop for home working with an Intel chip, and it has a WiFi 6 radio, and I have an ASUS router on my broadband which is WiFi 6, the theoretical rate is 1200 Mbps between the two. This can't be compared to Ethernet wired rates, so I would expect to see 700 or faster over WiFi.
(My broadband is only 200 Mbps as I don't have FTTP here).
23 years of broadband connectivity since 1999 trial - Live BQM