No. The CDC budget was never slashed.

The president proposes budgets, but that's the starting point of negotiations within Congress. Congress has consistently increased the CDC budget. https://apnews.com/d36d6c4de29f4d04beda3db00cb46104

The Trump administration fired the U.S. pandemic response team in 2018 to cut costs.

Snopes TRUE https://www.snopes.com/fact-check/trump-fire-pandemic-team/

COVID19 was not a surprise; that is, it was known to exist in China some time before the first cases appeared in the US. It is not unreasonable for a government to assemble a team to respond to something like a pandemic as needed, as opposed to having people dedicated solely to the purpose and nothing else. Both the NBC News and Washington Post articles the Snopes piece cites describe the action as part of moving people to related departments as part of the new National Security Advisor's desire to have his own hierarchy, and the head of the dedicated team resigning after not getting his desire to keep the team the way it was.

You may or may not agree with this. But please don't claim that this is somehow prima facie proof of the Trump administration's malfeasance/evilness.

Yes. The Trump administration fired the U.S. pandemic response team in 2018 to cut costs.

https://www.snopes.com/fact-check/trump-fire-pandemic-team/