If you prefer to watch videos instead of reading the guide, feel free to do so. There is a playlist that covers every trophy on my YouTube channel. If you'd like and subscribe, it would mean a lot to this channel!
Most of these trophies are probably going to pop during the following two steps without even trying. But I list them here so you know what we have to do to get all of them. If you don't unlock them online or during career you can also take them out one-by-one in exhibition fights.
All trophies that require an online collection can be divided in four sections. Fight Week Challenges, Blitz Battles, Online Career and Punch Card. This is the part of the game that decides whether you want to go for the platinum or not. The good thing about it is, that it is a lot easier than previous installments.
In my opinion the most enjoyable part of the platinum. Hence the final step :) As long as we preserve our career longevity by not taking too much damage during fights we only need to focus on the task to prestige a move. On "Easy" difficulty that's only a matter of time.