This is an innovation and you must not make sujud after your prayer for general dua. You can make Duaa as much as you want you in sujood during the prayer itself.

When I offer salah I make a long sujood after that and I make dua like that only. Is it permissible

Prayer | April 23, 2017 4:03 am
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I never prayed or fasted back in may jahiliya days. Since then alhamdu Allah I have deeply repented and regret and never have intentions to go back. I estimate I missed around 10 years of ibada what do I have to do ??
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Sheikh, can I place my phone as a sutrah if I want to pray when someone is sitting in front of me facing me? also can I place my shoes as a sutrah as well?