I would check the voltages at both fan motor and compressor,
before start,
during start up
and when motors seem near run speed rpm.

Since you have two separate motors it is a clue that BOTH show a slow start up that is a sign of low voltage at high amp start load.

Look for high resistance connections with “green death crud” and check fuses.

The Chinese made start capacitors do fail very frequently with short lives.
The “two capacitors in one case” seem to fail even more frequently.

The factory original USA made, with the now illegal PCB oil filled capacitor, on my Amana AC unit lasted from 1983 to 2011
but the Chinese capacitors seem to last 2-4 years, and the parts store clerks confirm this.
The made in Mexico capacitor now has lasted 5 years.

Definitely search on line for a copy of the manual for your unit with a wiring diagram, amp draws, freon pressures, etc.

There are a lot of scam manual sites online now, so use caution.

I found my Amana manual online at

https://www.manualslib.com