Yes, you can buy Bitcoin by PayPal. There are a few ways to do this, and each has its own benefits and drawbacks.
The first way is to find a Bitcoin seller who also accepts PayPal as a payment method. This can be tricky, as there are not many reputable exchanges that accept both PayPal and Bitcoin.
However, there are a few options out there, and this is probably the easiest way to go about it.
The second way is to use a Bitcoin ATM. These machines allow you to buy Bitcoin with cash, and they usually also allow you to pay with PayPal.
However, they can be hard to find, and they usually have high fees.
The third way is to use a peer-to-peer exchange like LocalBitcoins.com.
This option allows you to find someone who is willing to sell you Bitcoin in exchange for PayPal. The fees on these types of exchanges are usually low, but there is more risk involved, as you are dealing with an individual seller rather than a reputable exchange.
Whichever option you choose, make sure that you do your research first and only deal with reputable sellers or exchanges. Buying Bitcoin with PayPal is definitely possible, but it comes with some risks.