Need help for creating a pipeline for app log

My app stores the log files on azure, and in the following format.

mf-node-api 10-10-2024 06:07:36.760 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:07:36.810 AM info: Existing fund core auth token expired. Generating new auth token. mf-node-api 10-10-2024 06:07:37.512 AM info: Fund core endpoint : /account/login, returned response with status : 200 mf-node-api 10-10-2024 06:07:37.513 AM debug: Sucessfully fetched auth token from fundcore : true mf-node-api 10-10-2024 06:07:37.549 AM debug: Fundcore auth token details saved sucessfully. mf-node-api 10-10-2024 06:07:37.830 AM info: Fund core endpoint : /master-data/country-list, returned response with status : 200 mf-node-api 10-10-2024 06:07:46.208 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:07:46.360 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200 mf-node-api 10-10-2024 06:07:51.247 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:07:51.397 AM info: Fund core endpoint : /master-data/tax-status-list, returned response with status : 200 mf-node-api 10-10-2024 06:07:59.202 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:07:59.291 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200 mf-node-api 10-10-2024 06:08:04.631 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:08:04.717 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200 mf-node-api 10-10-2024 06:08:24.416 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:08:24.547 AM info: Fund core endpoint : /master-data/occupation-list, returned response with status : 200 mf-node-api 10-10-2024 06:08:33.982 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:08:34.108 AM info: Fund core endpoint : /lookup/keys, returned response with status : 200 mf-node-api 10-10-2024 06:11:43.428 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:11:43.440 AM info: Found existing fund core auth token. mf-node-api 10-10-2024 06:11:43.575 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200 mf-node-api 10-10-2024 06:11:43.613 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200

This log is not formatted, although while writing I have given proper formatting. There is only space between the log, which is expected to be like below

mf-node-api 10-10-2024 06:07:36.760 AM info: Found existing fund core auth token.
mf-node-api 10-10-2024 06:07:36.810 AM info: Existing fund core auth token expired. Generating new auth token.
mf-node-api 10-10-2024 06:07:37.512 AM info: Fund core endpoint : /account/login, returned response with status : 200
mf-node-api 10-10-2024 06:07:37.513 AM debug: Sucessfully fetched auth token from fundcore : true
mf-node-api 10-10-2024 06:07:37.549 AM debug: Fundcore auth token details saved sucessfully.
mf-node-api 10-10-2024 06:07:37.830 AM info: Fund core endpoint : /master-data/country-list, returned response with status : 200
mf-node-api 10-10-2024 06:07:46.208 AM info: Found existing fund core auth token.
mf-node-api 10-10-2024 06:07:46.360 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200
mf-node-api 10-10-2024 06:07:51.247 AM info: Found existing fund core auth token.
mf-node-api 10-10-2024 06:07:51.397 AM info: Fund core endpoint : /master-data/tax-status-list, returned response with status : 200
mf-node-api 10-10-2024 06:07:59.202 AM info: Found existing fund core auth token.
mf-node-api 10-10-2024 06:07:59.291 AM info: Fund core endpoint : /lookup/key-items, returned response with status : 200

So I want to design a pipeline , I tried with regex but it is not working . I set up filebeat as follows,

filebeat.inputs:
  - type: log
    id: i4e-mf-logs
    enabled: true
    paths:
      - https://app_service/wwwroot/logs/i4e-mf-node-api-09-10-2024-logs.log
    multiline.pattern: "^[0-9]{2}-[0-9]{2}-[0-9]{4}
      [0-9]{2}:[0-9]{2}:[0-9]{2}\\.[0-9]{3} [A-Z]{2}:"
    multiline.negate: true
    multiline.match: after
processors:
  - dissect:
      tokenizer: "%{service} %{+timestamp} %{+time} %{+level}: %{message}"
      field: message
      target_prefix: ""
  - drop_fields:
      fields:
        - message
output.elasticsearch:
  hosts:
    - localhost:9200
  username: elasticuser
  password: <password>
  index: mf-node-api-logs-%{+yyyy.MM.dd}
setup.kibana:
  host: localhost:5601
setup.template.settings:
  index.number_of_shards: 1
logging.level: info

Somehow this is not working; could someone help me to configure it properly? what I am missing here.

Also, I tried with creating a pipeline
In the processor, i have given the following configuration,
Processor : GSUB
Field : Message
Pattern: \smf-node-api
Replacement: \nmf-node-api

Still not working