Are long-distance relationships worth the struggle, or is it better to move on?

Can't generalise. I have seen "worth keeping it even if it takes 5 years to get in the same city" and also "whether it's long distance or not it won't change anything". Hence, depends on the relationship.

Or...if you guys want to focus on some personal goals like career or something else focus on that while you are apart and to keep the fire meet occasionally.

Depends on the partner. Assuming the partner is completely loyal, how much your partner gives you space in your free time is what will decide the future of your relationship

It's worth until of' em cheat

Worth the struggle if the partner is good

What struggle? Just lack of sex? If relationship is just for sex then it's better to break up tbh