There are web front-ends to IRC that can mitigate message loss without having to run bouncers. Convos [1] and TheLounge [2] come to mind but there are others [3]

[1] - https://convos.chat/

[2] - https://thelounge.chat/

[3] - https://www.ilmarilauhakangas.fi/irc_technology_news_from_th...