回答
This is not a piece of advice to you I'm talking to myself for my practice of writing skills.
Past participles as adjective follow a 'be verb' or the verb 'feel'.
We use past participles to talk about how somebody feels. So, past participles will always be used with people or animals.
:Participial Adjectives
https://www.talkenglish.com/speaking/lessondetails.aspx?ALID=4201
This is not a piece of advice to you I'm talking to myself for my practice of writing skills. I've searched about participle adjectives on the web and found a site. I referred the 'participle adjectives' in the site to weblio dictionary, 18 of 20 participle-adjectives' primary verb is transitive verb. two are both transitive and intransitive verb. if you couldn't judge whether T or I, I suppose you should refer to WD.
:participle adjectives
https://www.perfect-english-grammar.com/participle-adjectives.html