Route - Recursive Gateway Fail over - Mikrotik Script
How To Recursive Gateway Fail over on RouterOS

Fail Over 2 ISP with Recursive Gateway
WAN-1 = IP: 192.168.2.2/24
WAN-2 = IP: 192.168.3.2/24

/ip route
add check-gateway=ping distance=2 gateway=8.8.8.8 target-scope=30
add check-gateway=ping distance=1 gateway=8.8.4.4 target-scope=30
add check-gateway=ping distance=1 dst-address=8.8.8.8/32 gateway=192.168.3.1 target-scope=10
add check-gateway=ping distance=1 dst-address=8.8.4.4/32 gateway=192.168.2.1 target-scope=10