Hi & welcome!
Watering plants shouldn't be a mystery, trying to guess that perfect moment of when to add more water w/o making a plant ill, and it doesn't have to be. That's the one thing a potted plant *needs* for its' person to do - give it a drink. It shouldn't be the thing that kills them. Overwatering isn't about adding a certain quantity of water or waiting for a mysterious period of time before adding more. Soggy peat that doesn't have enough oxygen in it is likely the culprit, not you & your watering can. Most bags labeled "potting soil" are mostly peat, an unsustainable product, and not a healthy or helpful thing to have in a pot.
Trying to deal with peat also gives rise to the related old wives' tale about plants preferring to be root/pot-bound. No plant likes to be rootbound. What is necessary for plants to stay alive is for their roots to not rot, which can happen so easily in a pot with dense soils, like ground dirt, or bagged mixes of predominantly tiny particles of peat, (or to simply shrivel from simply never getting any water.) Having very little soil around the roots would make the soil dry more quickly, and for even the most dedicated plant-overwaterers to not rot the roots of their plants. This is not ideal, since most non-cactus plants are stressed by dry conditions, it's just a way of coping with soil that has little air in it when moist. A more porous, chunky soil (like cactus/palm, if one is buying bagged,) can have more air in it even when it is moist because there is space between the particles. Roots need oxygen and moisture at the same time to function. When there are tiny particles of any kind in a pot, such as peat, sand, silt, clay, they filter into all of the tiny spaces in a pot, eliminating the air. "Overwatering" is the label and manifestation when roots have suffocated and/or rotted, combo of both. Over time, organic bits decompose into smaller bits, so even the "best" soil, if it has organic components, will need to be replaced when this happens. The speed at which this happens depends on many variables, but on average, about 1-3 years.
Other common pitfalls are using a pot w/o a hole in the bottom for excess water to drain away, putting a drip tray under a pot & letting water sit in the drip tray. Both of these can cause a build-up of fertilizer &/or tap water chemicals in the soil over time which can make plants ill. Misunderstandings about light are also common. "Low light" isn't interpreted the same by everyone, and sometimes plants are placed in a much too dim spot indoors.
If the soil isn't causing unnecessary hardships for plants your only limits are the amount of sun you have & the usual temp/humidity level in your home.
