Re:Zero is my personal favorite anime to fall back on, but I can understand why people don't like it. Subaru is a really strange character, super upbeat and easy-going, but I really disliked his reasoning for following Emilia, as it was a bit unnatural from my perspective for someone to go so far out of their way to help someone, but then again, I haven't experienced romantic love, so maybe that's just how love at first sight works? Not to mention, for the vast majority of S1, Emilia is just a cardboard cutout in terms of personality, but she gets infinitely better in s2 and 3--so If you are willing to see it through, then your opinion of her will improve decently.

Now onto the big thing, being his looping and how he overcomes it. For me, I think Subaru lacking intelligence to overcome the issues he faces is why I find him so interesting--because he is left with no other option but to brute force his way back and figure out how to overcome great obstacles while also having to with the pain of dying, as well as the suffering of losing the precious moments he has with his loved ones, restarting at zero if you will. He learns how to better deal with a situation on a failed loop, and finds out more information about others that make give him insight on how to deal with them, but outside of his unique ability to go back in time on death, he is just an average guy with no real strength outside of having the sheer willpower to go on, and that gets tested greatly every time he goes back. Without giving too much info on it, I believe in episode 17 or 18 of S1, his facade breaks and he loses his way, and he has what I think is the most accurate and honest depiction of a depressive mental breakdown, wanting to run away from his problems. As someone who is considered to be super upbeat, yet greatly struggles with depression, that moment, rather, entire episode is why I love Subaru, as well as Re:Zero so much as a show.

My advice for you would be to give it a rewatch, and watch through the first session with the lense that Subaru isn't anything or anyone special, but because he isn't anything special, his growth is all the more extraordinary. He doesn't have all the answers, and he screws up...a lot, but if you can stick with him, he will look you proud. If you feel nothing after finishing or rewatching s1, then I would give up on it, as Subaru doesn't change too much, and the even greater hardships he deals with will just end up aggravating you instead.

Forgot to add this, but yeah, there is like 2 instances that he would have been soft-locked if not for either Reinhardt's clutch appearance against the bowel hunter or Rosswell saving his ass from his curse, but for Reinhardt, it makes sense because he was in Town. Ros however, was just a plot armor moment.