DON'T READ! LISTEN & IMITATE the sound you hear!
Don't be distracted by the way it's written - LISTEN & REPEAT IMITATING!!
The L before the letter K, as in WALK or TALK, is NEVER PRONOUNCED so that we say /wɔːk/. /tɔːk/.
As a result we say walkie-talkie /ˌwɔː.kiˈtɔː.ki/
The same happens with L before F as in HALF. /hɑːf/
or before the M as in CALM /cɑːm/
or in SALMON /ˈsæmən/
Check out CAMBRIDGE DICTIONARIES ONLINE to listen to the exact British or American pronunciation of the words:
You can download the pictures below.
I hope you find this useful.