« Reply #20 on: Sunday 16 March 25 11:23 GMT (UK) »
You can find the Glasgow Herald and Evening Times newspapers on Google Newspaper Archive FoC. Unfortunately though, there is no great search function and you have to search by going to the specific date of paper you are looking for and then "reading" the paper.
The Google News Archive has the Glasgow Herald from 1806–1990. Like you say, it's not searchable by keyword, you can only go to a date and page then read through it.
https://news.google.com/newspapers?nid=GGgVawPscysCNewspapers[dot]com has it 1820–1985 and you can use your Ancestry log-in. The snippet you see from a free search may be enough to spot something you're looking for. You can then use the Google archive to view the whole article for free.
Find My Past / British Newspaper Archive have the Glasgow Herald 1820–1900 and are also searchable. With the subscription sites you can also widen your search to include other Glasgow papers.
East Kilbride: Macaulay, Scott
Lanarkshire: Graham, Brown, Struthers, Smith, McMillan, Napier
Dunnet: Nicholson, Douglas
Halkirk: Fraser, Campbell
Thurso: Coghill, Houston
W. Lothian: McKay
Muiravonside: Nimmo, Robertson
Alloa: Johnstone, Syme
Tillicoultry: MacDonald