How to allow some mac addresses in firewall/filter rules

[inna]

Doesn’t this mean this sentence?
If src-mac-address is my laptop for example, then allow this mac address.

But what do you mean by the dst-mac? My laptop connects to Mikrotik and Mikrotik again sends the data to my laptop. Do you mean in this case, I should assign the dst to my laptop again?
I mean both src and dst should be the same?

No, use ip->firewall->connections to see how the Internet works
Use a standart firewall!

I know a little about how internet works:) I’m not that much un-familiar with this concept because of my work, but up to my knowledge, I tried to figure out the docs and do but I 've not yet succeded.