@soudk I avoid most social media but there are several ways of browsing them. I like the alternative web frontends for twitter (e.g. nitter.net) and reddit (teddit.net, libredd.it) and use these quite a bit. Logging in isn't possible however. On mobile there are also apps, at least for android that let you use social media im a way private way. For Reddit I can recommend slide from f-droid. Quite feature-rich and logging in is possible.
Feel free to ask more if you want :)