Phalaenopsis are superb houseplants, and yes they are orchids. But there are very few other orchids which can be grown indoors without doing something extra, to adjust the humidity in particular - such as using a wardian case, standing on a little tray covered in gravel which is always kept wet, or for a third suggestion, put several maidenhair ferns around the orchid, with all in a suitable tray or container to hide the pots - if you are watering and spraying the ferns often enough to keep them good, the orchid will be ok too. Or stick to phalaenopsis.
If you do want to grow other orchids , living where you do, - and most if not all the regulars here do grow other orchids, then yes, you do need a proper greenhouse or growing space. Some use a basement or a spare bedroom, converted. Others use wide windowsills, and enclose them to make a space which can be kept more humid and have maybe temperature and light controlled to givewhat you need.
Growing orchids is a great hobby, but very addictive !