Sometime, sometimes, some time, some times

[Ju]

I googled the differences in usages among 'sometimes, sometime, some time and some times.
But I only found the definations from Cambridge grammar as follows. But I couldn't find 'some time and some times'. Can someone help? Thanks.

1. "Sometimes means ‘not always or not often’:

We usually played football at school, but sometimes we played hockey.

2. Sometime means ‘at an unknown or undecided time in the future or the past’:

Why don’t you come over and have dinner with us sometime? (at an undecided time in the future)

I knew I had met her sometime, but I couldn’t remember when."

 

[probus]

In addition to its common adverbial use, sometime can be a rather charming adjective. Cf: As the political crisis deepened, my sometime friend began to show his unexpected true colours.

 

[Matthew Wai]

But I couldn't find 'some time and some times'.

'Some time' means 'sometime' according to https://www.oxfordlearnersdictionaries.com/definition/english/sometime_1

I think 'some times' can be used in 'There were some times when my PC crashed'. See definition #8 at https://www.oxfordlearnersdictionaries.com/definition/american_english/time_1?q=time

 

[Rover_KE]

'Some time' means 'sometime' according to https://www.oxfordlearnersdictionaries.com/definition/english/sometime_1

Not always.

'Penny Black spends some time (sometime :cross every day on her stamp collection.'