I'm marid 4last 1.5yrs. No sucesful penetration yet. Can insert 2 fingers fully in2 vagina nw. Can I conceive by pushing sperm into vagina with fingers?

Possibly. You should have this assessed as you may have a congental (birth defect) anomaly of the vagina. This could include transverse septum to better understand why insertion is impossible. There are medical devices that can help with this situation, ask your physician.