Pretty good FR there, deepak!
The dips at 44 and 72 are due to the dimensions of the room, see the attached picture of the modes and their interactions. The peak to the right might be the double mode at 133Hz, hard to tell without the scale at the bottom. The amplitude of the modes is not bad though, and evenly distributed. Is it concrete walls? Since there is a double peak at 133 It could be the echo from the opposite side wall, so damping there might kill that tall peak. Look at the data and use the modecalc app to figure out the likely cause before you attack. Find the cause by trying to find a sound path from the speakers to the mic whose distance corresponds to the wavelength (or harmonic) of the frequency peak you want to kill.
I would experiment with the placement of speakers first with few treatments in place, to minimize the dips, then experiment with the placement of those monster absorbers to see if you can further diminish the dips. The floor / wall joint corners near the speakers is a powerful place for bass correction because pressure is highest close to the speakers and you can catch a lot of energy before it pollutes the room.
The red speaker looks good, I would mark it's location so you can go back if your changes only make it worse. You can probably tame that 130Hz peak by moving that speaker slightly because I think it is a room width related mode. The peak is high enough freq that thick damping panels should be able to kill it if you can use enough, and find the right spots for them.
The purple/green speaker is probably will improve with some position tweaks, start small first, like an inch at a time. You'll get a feel for what it will need. You can't make perfectly flat response with just position and treatments, but you should be able to get within +/- 10dB without breaking the bank, and it looks like you are not far off, except for those three spikes related to room dimensions. The difference in overall level is probably due to the different distances of the absorbers to the speakers. Remove them from the room and scan it again, you should see more similar volume levels. Notice how the peaks ignore that, because mic is picking up room modes there which are no affected by the absorption in that location.
I believe that optimizing the speaker location is the first priority, then adding treatment to cure the leftover problems is the most efficient way to go about it. It's a big job.
If the speakers end up asymmetric to the room shape that is OK as long as your listening triangle is symmetrical and equal distance from tweeters to ears. You have some asymmetry to the room anyway, like the ceiling bumps, etc. The asymmetry makes data "roughness" that you can use to your advantage by moving speakers around til you find a sweet spot. Roughness makes more sweet spots. A friend is helpful to press the scan button after you move the speakers, so you don't have to get up and down so much. Mark the floor when you find good location candidates.