What is the best and simple router where I can make 2 SSIDwifi and limit their internet usage?

im looking for simple router coz my existing modem/router dont have the settings i needed.My provider gave me 30G data cap for 1 month so i want to le

im looking for simple router coz my existing modem/router dont have the settings i needed.
My provider gave me 30G data cap for 1 month so i want to lessen the client w/c are connected to my network.
Information: internet speed upto 3mbps, 30G cap/month, 4 users
Here's my plan ex: "Internet>modem/router>A ssid & B ssid & my pc(LAN), i design 2 SSID for priorities, all connected to A & lan should get 90% of bandwidth(SPEED), all SSID B will only get 10%(SPEED) of the internet, 1 more i want to limit OUR usage to 1000mb/1G per day. also i dont know how to divide the bandwidth. im hoping that some1 can help me.

or:im looking for simple router coz my existing modem/router dont have the settings i needed.My provider gave me 30G data cap for 1 month so i want to lessen the client w/c are connected to my network.Information: internet speed upto 3mbps, 30G cap/month, 4 usersHere's my plan ex: \"Internet>modem/router>A ssid & B ssid & my pc(LAN), i design 2 SSID for priorities, all connected to A & lan should get 90% of bandwidth(SPEED), all SSID B will only get 10%(SPEED) of the internet, 1 more i want to limit OUR usage to 1000mb/1G per day. also i dont know how to divide the bandwidth. im hoping that some1 can help me.

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