I have never purchased a single microtransaction. I don't see the appeal of having a green shirt, or paying to win (buying in-game currency that I can use to level up, etc.). The second one in particular just defeats the purpose of why I play games (to learn to get good at them and exercise my skill). Any game that prevents me from winning using skill alone is not even a "game" as I would define it.

DLC is different. These days I rarely buy games on release. I wait for the dust to settle with frothy g4mers complaining about review scores and woke characters, and for all the inevitable QoL patches etc. to roll through, and pick up the game later on at a steep discount. For a number of reasons, I only play single player games, so missing out on the initial influx of players doesn't bother me, and I have a mammoth backlog anyway. If the base game was cheap and I enjoyed it, then I'll think about getting DLC. My favourite game is Nioh 2, and the three expansions for that game are all very substantial. I paid $15 or something for the base game and then like $20 for the season pass later on.