Ultraman Trigger series is actually not bad, it's just that there are many shortcomings that make this series unsatisfactory. This series focuses too much on the characters Kengo, Akito, Yuna and Ignis, so that other GUTS SELECT members don't get a role in the story.
What also makes this series unsatisfactory is the main character, namely Kengo Manaka. During the series Kengo often says "Smile-Smile" at the wrong time, and seems to spoil the atmosphere. And the way Kengo says it seems disgusting, in my opinion Kengo doesn't show a mature and serious side, he only does that when he fights as Ultraman
The storyline of Ultraman Trigger in my opinion is also too fast, especially in episodes 1 and 2, apart from being too fast, the two episodes also seem to only be promotions for the sword and tools used by Ultraman Trigger. The Woods that appear also have less impact on the storyline of the episode, although not all of them. This kaiju is impressed only to increase the duration of the episode.
Besides that, the Gliter Eternity form which is said to be the strongest form, but eventually becomes weak. Seen in several episodes this form is often overwhelmed and does not provide much resistance, especially against Carmeara. So my conclusion is that the Ultraman Trigger storyline is not neat and too fast, especially in the first arc. Besides that, there are many characters that in the end only add to the duration, most of the battles only focus on the main antagonist, namely the Dark Giants Trio, while the other kaiju do not have a significant role. There are still many shortcomings in the development of the characters.
Although the storyline is not neat, but the storyline is actually still good and worth enjoying. Since the beginning of the story we have been presented with several mysteries such as the origin of Ultraman Trigger? Who are the Dark Giants? What exactly is the Eternity Core? Who is Mitsukuni Shizuma and how did he know about Ultraman? And what is Yuna's relationship with Yuzare?, besides that, we are presented with drama and conflict between the characters, especially the conflict between Kengo and the leader of the Dark Giants, Carmeara, and all of that can make the audience interested in seeing the continuation of the story in each episode.
Ultraman Trigger also has good CGI, compared to other Ultraman series, Ultraman Trigger's CGI is the best. Ultraman Trigger also makes more of the original Ultraman voice than the human voice, so this Ultraman Trigger is not as noisy as the previous Ultramars who always talk during battle.
Ultraman Trigger is also shown to change color directly, just like Ultraman from the Heisei era, especially Ultraman Tiga, so you can say Ultraman Trigger is Ultraman from the Hesei era with a more modern theme. The storyline could be better, so the audience won't be disappointed to see it.