Two PPPoE links agregation

Hi!

For the first time i can not find clear solution for mikrotik on net.

Facts:

I have MikroTik RB951-2n Router.

On ethernet 1 port is ADSL to ISP1.
On ethernet 2 port is link to Fiber from ISP2 (Huawei EchoLife HG8010)

In both cases i created PPPoE clients with all parameters and both links works fine.
From both ISPs i have dynamic public IPs.
Speed on ADSL is 6/1 Mbps
Speed on Fiber is 40/30 Mbps

Usernames and passwords for ISPs are different. (no way for MPPPoE)

Ethernet 3, 4, 5 and WiFi are bridged.
IP address pool for bridge is 192.168.1.0/24.

Router OS version is 6.7

Question:

How to combine these two PPPoE for bandwidth, failover and load balance?

I already tried few solutions but not working (i think because i dont have double nat and solutions are for double nat).