Plot data with Seconds Frequency

Hey, I have this data of 1 day 2022-03-15 taken every second. How can I convert it into ts object and plot it without any hassle? my goal is to find structural breaks in the data. Please, anyone help.

sample data set: Start Time(10:24:21), End Time(23:59:59)

Date Time pressure
15/03/2022 10:24:21 1.19E+05
15/03/2022 10:24:22 1.19E+05
15/03/2022 10:24:23 1.19E+05
15/03/2022 10:24:24 1.19E+05
15/03/2022 10:24:25 1.19E+05
15/03/2022 10:24:26 1.19E+05
15/03/2022 10:24:27 1.19E+05
15/03/2022 10:24:28 1.19E+05
15/03/2022 10:24:29 1.19E+05
15/03/2022 10:24:30 1.19E+05
15/03/2022 10:24:31 1.19E+05
15/03/2022 10:24:32 1.19E+05
15/03/2022 10:24:33 1.19E+05
15/03/2022 10:24:34 1.19E+05
15/03/2022 10:24:35 1.19E+05
15/03/2022 10:24:36 1.19E+05
15/03/2022 10:24:37 1.19E+05
15/03/2022 10:24:38 1.19E+05
15/03/2022 10:24:39 1.19E+05
15/03/2022 10:24:40 1.19E+05
15/03/2022 10:24:41 1.19E+05
15/03/2022 10:24:42 1.19E+05
15/03/2022 10:24:43 1.04E+05
15/03/2022 10:24:44 8.95E+04
15/03/2022 10:24:45 7.52E+04
15/03/2022 10:24:46 6.24E+04
15/03/2022 10:24:47 5.13E+04
15/03/2022 10:24:48 4.17E+04
15/03/2022 10:24:49 3.54E+04