Hi. What would be the best way to set up two Mikrotik hAC ac2 for the following scenario

Mikrotik 1 -
Connected to my ISP's fiber box ( via eth1 ) and acts as the main router. The IP address range for this router is 192.168.99.1/24

Mikrotik 2 -
Connected to Mikrotik 1 via ethernet. Both Mikrotik 1 and Mikrotik 2 are in the same subnet ( ie. 192.168.99.1/24 ).
Wireless lan to have a different subnet ( 10.10.10.1/24 ) so that it won't have access to the 192.168.99.1/24 network

Note :
I used Quick set ( WISP ASP ) and set the configuration to bridge for the initial setup. I created a virtual wireless interface ( "wlan_guest" ), created a guest bridge ( bridge_guest ) and added wlan_guest as a port to bridge_guest. I was able to connect to the guest wifi but I wasn unable to get any internet connection.

First MT is a router, one bridge ( create the number of vlans as you have subnets on the network ), trunk port to second MT
Second MT is an AP/switch trunk port in on ether1, only vlan identified is trusted subnet on with interface being the bridge.
assign vlans to etherports and wlan ports as required.