Sorry to hear that but glad to see you be proactive.
If you haven't done it already, I'd really recommend working closely with your DCT and advisor to 'autopsy' why you didn't receive invites, especially if you feel in the dark about how your application is being viewed. This could also be a good time to solicit brief feedback from a few select sites, especially if you felt like you were a great fit for them. A Aot of training DCTs are very busy now but they most likely got into their roles due to wanting to help and mentor future psychologists.
And for LORs, I like to see both congruence between what an applicant says and what their writers say, as well as getting more details on objective facts (like how you approach the assessment process to complement your hours/instruments).
If you decide to solicit new recs, you could share your AAPPI and ask your original writers if they can amend their letters by adding their perspectives on things you're highlighting about yourself (if they did not speak to some of those elements originally).
Good luck!