is it available on Playstore?
It is available on Playstore, but do not download your wallets from Playstore, it is recommended you download Electrum from the original website, and this is the link to it:
https://electrum.org/I don't know how to set it up on my Android phone, can you link me a thread that will teach me how to do it, I want to use Electrum ever since but the problem is that I don't have a personal computer and I don't like installing one in Windows.
You simply download Electrum from the original website and install it. If you only have a mobile device, then you have to buy a hardware wallet, so you store your funds offline and in a safe enviroment.