I am getting about 60Mbps on my WiFi, paying for 80! And about 130Mbps via 4G. I find that amazing!!
What are you getting using cat5e cable from your router-laptop. I would reckon you would be getting close if not more to what you ISP has told you will get (80)
Your hardware on your devices will come into play, just as much as obstacles over Wifi.
I treated myself to a Wifi 6 (802.11ax) laptop, my wifi is somewhat faster off an older isp provided wifi 802.11ac router than my old laptop was but, it is still bottle necked. When I get round to installing my own wifi 6 router, wifi will be alot faster using my wifi 6 laptop.