How to add funds to Steam wallet without credit card?

great another card just for online shopping, and limit to 100$ in case it was hacked

Steam Wallet cards, you can buy those at Gamestop.

Pretty sure you can just use steam's own checkout system rather than paypal? Just don't save your card onto it.

On the Steam wallet page there are different options to add money to your Steam wallet that are specific to your region

So if your only option is Paypal, you can't do anything about it.

edit: maybe you can buy a Steam Wallet card.

paysafecard for a few regions in europe? Also i heard that paypal is pretty safe. But i'd never put my main credit card on it.

The only way is PaySafeCard. You can buy it in every Vobis. You can also find other places near you here.

from what country are you, because different countries have different payment methods.
In most west-european countries you can pay with your bank card