The Jaenisch Gambit is bad. Unless the English Opening player doesn’t know how to punish it!
Practice the Jaenisch Gambit against a sparring partner: https://noctie.ai/?aff=q9yKD
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Learn the English Opening:
A full English Opening Repertoire: https://youtu.be/S2EwNxgXcfg
13 English Opening Traps (for white and black): https://youtu.be/u8_MNvX6rmM
Introduction to the English Opening: https://youtu.be/3aedSwUI9UU
The Reversed Sicilian: https://youtu.be/b22YC1OxaJ4
The Symmetrical English: https://youtu.be/xE0uUuAcMUg
The Botvinnik System: https://youtu.be/Af06rSpt1xM
Anglo-Scandinavian Defense: https://youtu.be/Y4cgrfdP804
Anti-Grünfeld Systems: https://youtu.be/BHsUA9Y3_L8
Caro-Kann Defensive System: https://youtu.be/ur2HBFvyjPQ
Agincourt Defense: https://youtu.be/u0svhCPjJ_c
Anglo-Dutch: https://youtu.be/lkoMSxl5PQs
Mikenas Attack (Mikenas-Carls Variation): https://youtu.be/sotUR98nQdk
Nimzo-English: https://youtu.be/7Zo6etwzIQg