You’re exactly right. In 1993, calculations given at a large symposium showed that there wasn’t enough matter in the universe to cause it to ever contract again. Within 2 years, dark matter had been invented to enable a future contraction. A great sigh of relief was heard at that news.
A future contraction, "the big crunch", is not predicted by current models - even with dark matter.
Open Universe?
Forever expanding, meaning time without end?