I used journalctl -k -f and this is the output, I’ve also tried dmesg and smartctl and replied with the output on other comments, and all show some kind of I/O error, I guess I’m fucked or can it be because of a bad cable or something?

Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#14 Sense Key : Illegal Request [current] 
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#14 Add. Sense: Unaligned write command
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#14 CDB: Read(16) 88 00 00 00 00 00 39 dd 26 78 00 00 00 08 00 00
Apr 13 17:06:59 fedora kernel: I/O error, dev sdb, sector 970794616 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#15 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=3s
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#15 Sense Key : Illegal Request [current] 
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#15 Add. Sense: Unaligned write command
Apr 13 17:06:59 fedora kernel: sd 1:0:0:0: [sdb] tag#15 CDB: Read(16) 88 00 00 00 00 00 39 dd 26 b8 00 00 00 20 00 00
Apr 13 17:06:59 fedora kernel: I/O error, dev sdb, sector 970794680 op 0x0:(READ) flags 0x80700 phys_seg 4 prio class 2
Apr 13 17:06:59 fedora kernel: ata2: EH complete
Apr 13 17:19:28 fedora kernel: ata2.00: exception Emask 0x50 SAct 0x400 SErr 0x30802 action 0xe frozen
Apr 13 17:19:28 fedora kernel: ata2.00: irq_stat 0x00400000, PHY RDY changed
Apr 13 17:19:28 fedora kernel: ata2: SError: { RecovComm HostInt PHYRdyChg PHYInt }
Apr 13 17:19:28 fedora kernel: ata2.00: failed command: READ FPDMA QUEUED
Apr 13 17:19:28 fedora kernel: ata2.00: cmd 60/00:50:38:e3:9d/01:00:39:00:00/40 tag 10 ncq dma 131072 in
                                        res 40/00:01:00:4f:c2/00:00:00:00:00/00 Emask 0x50 (ATA bus error)
Apr 13 17:19:28 fedora kernel: ata2.00: status: { DRDY }
Apr 13 17:19:28 fedora kernel: ata2: hard resetting link
Apr 13 17:19:31 fedora kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Apr 13 17:19:31 fedora kernel: ata2.00: configured for UDMA/33
Apr 13 17:19:31 fedora kernel: sd 1:0:0:0: [sdb] tag#10 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=3s
Apr 13 17:19:31 fedora kernel: sd 1:0:0:0: [sdb] tag#10 Sense Key : Illegal Request [current] 
Apr 13 17:19:31 fedora kernel: sd 1:0:0:0: [sdb] tag#10 Add. Sense: Unaligned write command
Apr 13 17:19:31 fedora kernel: sd 1:0:0:0: [sdb] tag#10 CDB: Read(16) 88 00 00 00 00 00 39 9d e3 38 00 00 01 00 00 00
Apr 13 17:19:31 fedora kernel: I/O error, dev sdb, sector 966648632 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 1
Apr 13 17:19:31 fedora kernel: ata2: EH complete

Huh weird I do have experience of this happening especially on used drives that are technically beyond their lives, +7 years etc, guess it depends on manufacturer and classification since you haven’t personally experienced it. When I say slow down I’m referring to the read and write speed not the platter rpm even though that could happen such as with motor bearing wear. There’s really multiple potential hard wear issue that could cause read and write speeds to slow down: head wear, platter degradation, etc. Although i do want to clarify that I’m not necessarily saying its dying or even if its 100% a hardware issue since fragmentation could be the cause. Not even sure if it’ll be throwing out errors yet so I can’t wait to see what OP updates us with.