Dragon's Dogma 2

There is an easier way to achieve this.

If I understand the system correctly, there are 3 levels of appreciation: 0 (neutral) 1 (like) 2 (love). To obtain this achievement you must have 50 people who like you (level 1).

Some guides talk about drinking in bars and others talk about giving people gifts. Drinking at bars doesn't give you any information about how many people like you or how many times you have to drink for them to actually like you. Giving a gift depends on the gift itself and the person receiving it... All gifts except the Wyrmslife Crystal. If you give one to a person, their level automatically increases to level 1. It doesn't matter who.

Wyrmslife crystal are obtained by killing any dragon.
https://dragonsdogma2.wiki.fextralife.com/Wyrmslife+Crystal

So when you have around 50 crystals (and you will have plenty by the end of the game), just rest in a bed. Take all the crystals you have. Walk around a town and give one to each person you find. This should take 5 minutes or less.

After that quit to the main menu without saving and and take the second option in the menu to load your last true save (in the bed).

There is an easy solution for this, that doesn't require you to hand out gifts.
You need to head into inns and buy rounds for the other customers.
This is most effective at night, beacause there are more people.
I visited the two taverns in town either in Bakbattahl or in Vernworth and slept a night to repeat the process over and over again.
I don't think just repeating it in a single night at a single tavern will get you further, because the affection system seems to only advance in successive days.

FYI: This achievement doesn't need you to have Max Affinity, so the stats under the History tab don't reflect your progress.