This low detergent fad has to end..
The amount of people online, not usually here, that suggest using a tiny amount of detergent(**cough renduh on tiktok) is causing lots of problems.
The manufacturers suggestions are typically good guidelines, despite people insisting that they're only to sell detergent. A lot of factors play into detergent usage requirements, dilution ratio is certainly one, you'll need more detergent for the same load in a standard top load vs a front load as I've observed comparing my AWN432 SQ to a 1960s Westinghouse front load. Another important factor is soil load or how dirty the clothes are, both particulate dirt like dust, mud and oily dirt such as, body oil, petroleum, and kitchen grease. If the washer starts and within a minute all the suds collapse,you need more detergent, all of the surfactants have bonded to the dirt and no more cleaning can or will occur. Even low sudsing detergents will have a little suds to use as a guide. If one is still unsure, feel the water, it should feel slippery not just like plain water.
Water hardness is another issue, where I'm staying with friends in West Virginia they have even softer water than I had in Detroit, as such we use about 1/2 to 2/3 the amount of detergent for similar loads. This has an effect on FL vs TL too, as there are more minerals to bond to if there is more water.