If we define “worse” as higher journalist deaths, zero press freedom, no access, and active targeting, then Gaza is clearly worse for journalists right now.
Ukraine/Russia conflict is obviously extremely dangerous but it allows far more media access, transparency, and foreign presence.
According to the world press freedom index, Israel has the third highest press freedom of all middle eastern countries (Qatar and Cyprus are a bit higher, everyone else in the middle east is lower in most cases much lower).
Israel has not granted access to journalists to report independently since October 2023.
There has been very limited escorted trips with external journalists but all tightly supervised by the IDF.
Journalists already in Gaza have been killed regularly and there are credible accusations that many are deliberately targeted by the IDF.