Thank you. If white plays J3 then it’s a seki in the game on the right, yes?
White needs F4 too in order to make seki, so you should be able to get a move around C6 first. Since seki is no points for either, white only has territory on top and your left side should be bigger than that ^^
If you’re very careful, the white group should not die.
I tried to play a plausible endgame against myself and I ended up with White winning by 0.5 point. So, a very close game, that could have ended either way.