Based on my past experience,
BTC RPC Explorer is easy to install. While mempool.space have lots of dependency (such as Electrum Server & MariaDB), this one only require you to install Bitcoin Core and Node.js.
BTC RPC Explorer seems to not know if a transaction has RBF or not. Since I'll use it for my transactions, it's not that bad. Correction: it does know if RBF is on, but it shows the info only for unconfirmed transactions.
As a minus, the look & feel is not that great. On the other hand, it doesn't have yet another database, which is
very nice - having 3 databases for the same thing (just because electrum server and blockchain explorer are made by different people) is counterproductive.
I may give it a try, let's see how hard it is to install/configure. Thank you.
Update: in under 1h I've got this also
running. Impressive! Thank you for the hint!