Can a file (apk, txt, png, jpeg etc) install and run itself after getting downloaded?

I recently got an apk and a .txt file out of nowhere (prob drive-by download)

I checked and turns out it was from a malicious website which’s main page was the one to download the APK
And it’s second page I got redirected to was the one that downloaded the . txt (might even be a fake txt file extension because I only enabled "show extension" a few hours ago and the .txt was still there before I turned it on)

Could any of the 2 files have installed/ran themselves automatically through any kind of exploits

I deleted them anyways but I just want to make sure they never had the chance to have any effects on my phone

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