| How am I supposed to get more than 4 partitons?
| Extended Partitions not found on Easus Partition Management
|

I've never seen a disk management program like
that. Usually Extended is an explicit option. Extended
is an empty Primary that can hold any number of
Logical partitions. It looks like Easus is hiding the details
in an attempt to simplify. It then fills the Extended
with the first Logical you make, which makes no sense.
There's no point in have an Extended if it just holds
1 Logical. The only option I can think of is to then
resize your Logical and put another Logical next to it.