If that's all what you have under /ip firewall, which means you have nothing in the NAT table /ip firewall nat, then it's normal that you cannot access the internet (missing NAT masquerade rule).
Also, the filter table that you posted above is unfortunately insecure, due to the presence of this rule:
add action=accept chain=input comment="ACCEPT New" connection-state=new
It pretty much doesn't protect your router from incoming connections from the internet at all. For now you should remove ALL those firewall rules above, and use the default firewall configuration from MikroTik instead.
After having removed the rules above, look at the section "MikroTik RouterOS 7.18 default firewall rules" from this post:
and apply the content from there, both for IPv4 and IPv6. Please note that there some change to be made with these commands:
/interface list member
add list=WAN interface=ether1 comment=defconf
add list=LAN interface=bridge comment=defconf
You need to make adjustment if ether1 is not your WAN interface. Also your bridge is not named bridge but (as above) br_lan, so adjust interface=bridge to interface=br_lan.