Sadly, the community is scarce, it's hard to find games unless you start actively trying to add people. I can grind out a better deck from LoTD in one day than months of playing duel links. It's also far far far easier to make any deck you want in this game. LotD- Has far more cards and methods of summoning from Pendulum, xyz, synchro, etc. but this stuff is ultimately not very important at all.

However DL cetainly has a lot more flair to it, between the music,voices, animations, skills. But eventually you will hit a wall of players who've invested the time and money to make really strong decks and if you want to beat them either you will have to start dropping money or tons of time. When it comes to ranked, you want to win to unlock all the bonuses. It makes it really hard to react to your opponents' trap cards during the battle phase, and most often it can lead to you getting easilly wiped in a single turn. I also don't like the speed duel aspect of not having a second main phase.

After a few months of playing, I barely have anything competitive. In Duel Links it's very hard to grind for the cards you want, you will be spending tons of time farming npc after npc after npc for a few gems to maybe get your card you're going for.

When it comes to a choice between LotD and DL, I personally enjoy LotD better.

Yugioh duel links farming bot