Hello @danish1993 !
Stripe will not appear in the country search where their service is not supported. Stripe is supported in Germany but most likely the country you are working from does not support Stripe. Try using a good VPN and choose Germany as the proxy location. You should then be able to see the Stripe option as a third-party payment.
Hope this helps!
This is Lana from Shopify.
The Stripe gateway will only show as available in countries where Shopify Payments is not supported, otherwise you will notice that it replaces Stripe. It looks like Shopify Payments is supported in Germany, and that can be seen in our payment gateways info page here. Does your client have a particular reason that they prefer to use Stripe? If so, they will need to get in touch with our live support here and we will be able to look into making it available for the account. Please do note that this will make Shopify Payments unavailable, and if in the future they wish to switch, they will need to contact our support again to get it looked into.
There are certain advantages to using Shopify Payments instead of a third party gateway like Stripe:
For more info on Shopify Payments, you can see our help doc on the topic here.
Let me know if you have any other questions at all and I will be happy to help you out.