I think people all over the world aren't reacting to climate change like they did to covid-19 for numerous reasons.
The most alarming one, in my opinion is that many of us do not think climate change is real. I have met a lot of people who do not believe in science and noticed that humans are overly optimistic and do not easily believe bad news especially if they can't see its direct consequences, like in this case. Climate change and Covid-19 are both problems but people believe in the disease's existence more easily because they can witness the deaths caused by it.
Moreover, the media talk about Covid-19 more than they deal with climate change and its potential dangers. In my country, Tunisia there is a daily news report on deaths and new cases related to this disease whereas the global warming issue is uncared for.
This lack of awareness and public interest results in a lack of action for the environment.
I should finally note that Many countries, like Tunisia have a difficult economical situation that forces them to focus on quickly solving the biggest threat they are currently facing (the pandemic) to avoid crisis, thus neglecting long term problems like climate change.
To sum it up, citizens and gouvernements aren't quickly taking action for the environment compared to how they handled the pandemic because of a lack of awareness, disbelief in global warming and focusing too much on other important problems.