Active_comparator: Group M-TAPA (Modified Perichondral Approach Thoracoabdominal Nerve block group)

In group M-TAPA, M-TAPA block will be performed with patient is in the supine position. After providing aseptic conditions, the high frequency linear US probe (11-12 MHz, Vivid Q) will be covered with a sterile sheath, and an 80 mm block needle (Braun 360°) will be used. The US probe will be placed in the sagittal plane where the midclavicular line intersects with the costal cartilage corresponding to the costochondral angle. Using the In Plane technique, the probe is gently pushed to visualize the lower part of the costochondral angle at the central level, advancing the block needle in the caudal-cranio direction, 5 ml of saline will be injected into the layer between the transverse abdominal muscle and the lower plane of the costal cartilage, and the block location will be confirmed. After the block location is confirmed, a total of 20 ml + 20 ml of 0.25% bupivacaine(Buvasin %5 flakon) (total 40 ml for both sides) will be injected bilaterally.

Active_comparator: Group C (Control group)

In the control group, analgesics will be administered according to the protocol in postoperative analgesia management.