I wrote 5 phrases and several alternatives. Can you please check tif they are grammatical? Thank you. I urgently need them. I include 2/3 phrases each time. Thank you

1) While I was getting ready for school
it started to rain, my mum cooked brakfast, my sister woke up, the toothpaste fell off the sink (washbasin?), mum mum woke up, I fell off (down) the stairs, I lost my pencil, my sister had a shower, my mum phoned me, the phone rang, her plane took off, I realized I hadn't had my rucksack, my cat asked for food, my sister got up.
2) After I had had lunch/had made breakfast/ had taken a shower/ got ready (had got ready??)/ I had finished my homework.... I left home.

1. spelling = breakfast

2. I prefer "had gotten ready" (British English is it?)

Sra

1) While I was getting ready for school, several things happened. It started to rain, my mum cooked breakfast, my sister woke up, the toothpaste fell off the sink (or washbasin), my mum woke up, I fell down the stairs, I lost my pencil, my sister had a shower, my mum phoned me, the phone rang, her plane took off, I realized I hadn't taken my rucksack, my cat asked for food, and my sister got up.

To check the grammaticality of the phrases, you can use the following steps:

1) Determine the subject and verb in each phrase. For example, in "I fell down the stairs," the subject is "I" and the verb is "fell."
2) Check if the subject and verb agree in terms of tense and number. For example, if the subject is plural, the verb should be plural as well.
3) Look for any errors in word order or use of prepositions. Make sure the phrases are coherent and make sense.
4) Read each phrase aloud to see if it sounds natural and grammatically correct.

For the second set of phrases:

2) After I had had lunch/had made breakfast/had taken a shower/got ready (or had got ready)/I had finished my homework, I left home.

To check these phrases, you can follow the same steps as mentioned above - determining the subject and verb, checking for agreement, verifying word order and preposition usage, and reading aloud to check for naturalness and grammaticality.