Most reliable way to know if a journal is available online is the Journals A to Z.
Hit a paywall?
Always follow the 'Get it at E/SMHS' button to get past paywalls. If you start from a Library link to free sources such as PubMed you'll find the button on the abstract view of the record. In GoogleScholar click on >> that appears under the citation to see the 'Get it' link.
There are other solutions, including bookmarklets and the LibKey Nomad browser extension that you can use to reach subscribed full text even if you have not landed on the reference from a Library link.
Links to resources that require a subscription have to carry through the Library's authentication to the publisher.
You want this paper: - Clinical Decision Making: Nurturing Our Core Skills - Annals of Internal Medicine - 5 May 2020 The article link is https://doi.org/10.7326/M20-1423 This will not allow you full text access. You need to add a Library prefix to the link https://login.smhslibresources.health.wa.gov.au/login?url=https://doi.org/10.7326/M20-1423
The prefix is - https://login.smhslibresources.health.wa.gov.au/login?url=
You can copy and paste the prefix to articles links but that is tedious - it is easier to add it with one click using a bookmarklet, or use the LibKey Nomad browser extension.
Sometimes you will have to go back to the Library's Journals A-Z though as Library subscribed access may not be via the site you are on - for example, links to paywalled articles in https://www.thelancet.com/ will not work because the Library's access to The Lancet is via ScienceDirect - https://login.smhslibresources.health.wa.gov.au/login?url=https://www.sciencedirect.com/journal/the-lancet
Lookup a journal article by DOI or PMID
Type or paste a DOI name, e.g. 10.1093/infdis/jiaa429 into the text box below.
Be sure to enter all of the characters before and after the slash.
Do not include extra characters, or sentence punctuation marks.