According to https://www.englishclub.com/grammar/verbs-modal-would.htm, would can be used to create remoteness of possibility or probability remoteness between speakers (formality, politeness).
Here are examples by me that try to create remoteness of possibility or probability or remoteness between speakers as the site says we can.
Would examples:
(1) If you want my answer, I would think that I will give you some.
(2) I would expect him to come because he doesn't seem to be busy.
(3) I saw him jogging this morning. He would seem to be getting better if he is able to go jogging now.
(4) You have the correct answer. Well, I would have to agree with you if you have the correct answer.
(5) It's Christmas. She would go to the church when people celebrate Christmas on the streets.
Could examples:
(6) If you want my answer, I could give you some.
(7) I could expect him to come because he doesn't seem to be busy these days.
(8) I saw him jogging this morning. He could get better soon if he is able to go jogging now.
(9) You have the correct answer. Well, I could agree with you if you have the correct answer.
(10) It's Christmas. She could be at the church when people celebrate Christmas on the streets.
My questions:
(a) Can we use them this way?
(b) Do we just treat would and could as softer will and can when using them for these purposes?
(c) And even though would and could are in past tense, we don't need to change the tense in subordinate clauses and we just use the tenses in the subordinate clauses according to what we try to say, right?
