Go back and finish Deep Space Nine if you didn't watch it consistently, it's great and probably the most adult Trek. If you're looking for less of a commitment, Strange New Worlds is great. The only plot point you need to know going into it is
::: spoiler spoiler
Pike has seen his future and knows he's destined to become severely paralysed
:::
Discovery is pretty standalone but it's a very odd show. Everyone is very emotional and every episode is super dramatic. Not to everyone's taste but good if you want a Trek that reflects more modern TV.
Enterprise gets quite good as well, despite it's flaws.
we shonked good